Samsung — Worst service, misbehavior,cheating by SAMSUNG service center

I have charging problem with my Samsung mobile A70 & for that reason i had submit device to below service center on 18th Aug at 11.30am.
SS Enterprises, Manik Moti complex, A building, Office no-19-24, Katraj, Pune-411046.
Below is the chronology of the problem i faced with service center.
1) Device submitted on 18/08/2021 to center. Service Engineer Mr.Pramod told me that problem is with charging circuit which needs to be replace & which will cost 1400/- & will be replace within 2 hours & give me receipt document which is manually filled attached here.
2) 2nd visit(18/08/2021)After 2 hours at 1.30 pm again i visited service center to collect device.
Device is repaired & ready. I ask to service engineer i will pay by Gpay/credit card but he told that we will accept only cash. So, i paid 1400/- in cash & asked for bill(Invoice) but he denied & says that bill not required if you face any problem you will come to us we are there to support you. As i am in hurry i take the device & came back to home at that time battery was 87% charged & i plug in the charger but after 30 mins i checked mobile is not charged & battery % reduced to 84%. .
2)3rd Visit(18/08/2021) Again immediately i went to service center & shown the problem, then Mr.Pramod told me that problem is with your charger so go back to home & come back with your charger we will check.
3)4th Visit(18/08/2021- So i took my charger with me & again went to service center. Mr.Pramod check with my charger also with his charger but found same problem & ask me to submit mobile & come back next day at 4pm till time he will fix the problem.
I again ask for the bill but he said i will not give bill, if you want i will remove the replaced part from device & you will take back your mobile.
I said you keep device with you i will come back tomorrow.
5)5th visit (19/08.2021) I called service center at 5pm & talked with Mr.Pramod, he said problem is with battery which is replaced & now device is OK you will collect it. So i went to service center & collect the device & again ask for bill.
Mr.Pramod put 1400/- in front of me & ask me to take back the money & device but stil bill not given, & he said that problem is still not fixed & motherboard needs to be replace which will cost 11, 000/-.
So i registered complaint on SAMSUNG customer care immediately from service center. Customer care representative listen my problem & talked with Service center In charge Mrs. Swarupa Jagtap but she failed to answer also provide details of part consumption & billing amount.
(No any job sheet created in system not any part consumption shown in system)
Customer representative told me that your problem will be resolve within 24 hours & our local service area manager will contact you.
Mean while on 21/08/2021 i got call from Mrs.Sanyiukta Thakur who is from service center, She assured me that my device will be repaired at free of cost & all the details of past repair activities will be given along with bill.
6)6th Visit (21/08/2021)
As request from Mrs.Sanyukta Thakur i visited to service center & meet Mrs. Swarupa Jagtap.
I asked her for back history details but she said sir please forget past happenings & submit the mobile we will check it again with senior engineer & get it fixed.
Mean while in our discussion Mr.Pramod said i have seen 1000 peoples like you & behaves unethically.
So, i leave from service center & again filed complaint on SAMSUNG customer care.
Again as per request from Mrs.Sanyukta Thakur I visited SS enterprises on 24th Aug at that time Mrs.Swarupa Jagtap collect my phone as per procedure & create job sheet.
I stay in service center for 1 hour & waiting for mobile to be checked from service Engineer.
After 1 hour Mrs.Swarupa Jagtap told me that mobile is checked by our Senior Service Engineer & as per him motherboard needs to be replaced which will cost 11000/-.
So I denied for repair & immediately went to other service center Prayag Services & submit my mobile.
Prayag Services repaired my mobile within 2 hours & repaired cost is 1058/- only, also I got invoice immediately on mail. I am very much satisfied with service from Prayag Services.
So, why such difference in service in two different service centers.
As my problem is serious & I am begging for actions on my complaint from SAMSUNG CC, but SAMSUNG CC keeps me hanging since last 4days.

Meantime when I am taking continuous follow up with CC for actions on my complaint, one of CC representative told me that Mr.Raj Selvem who is area service manager has called me on 21st Aug & solve my problem, but I never got call from any area service manager till date. So Area service manager also gave false feedback to CC then how I will trust on SAMSUNG CC.
Last week I had call with Mr.Amrik Choudhry he assured me that strong action will be taken on service center & he keep me updated but still no any update received.
Also request to check availability of CC TV camera in SS Enterprises.