Sony India — Bravia TV breakdown aggravated at the service centre

TV has come back with new display issues that were not present when it was handed over to the service center for repair, and was returned with the assurance that it was working fine - AND HAS BEEN TESTED THOROUGHLY. No reference to the new display issue or reason why.

Quick summary of the problem history:

TV MODEL NO : KD 49X7500E
SERIAL NUMBER : 8002991
PURCHASED ON :[protected] at Croma

On 11th August, after working fine all day, when we switched on the TV in the night, it did not go beyond the android start up screen. When unplugged from power and powered on again, as suggested in your website, the TV did not power-on at all.
I reported online the same night at 10.56 PM and received complaint ID.NO IS 61217068
Next day, I called up SMARTCARE - SONY AUTHORISED SERVICE CENTER AT Adyar, Chennai and explained the problem, shared the complaint number.
A technician visited my house on 13th August, tested, said the motherboard had to be replaced. I agreed, he raised the request and said he will come back to replace it once spare is received. I gave him my complaint number which he noted on his receipt
The center sent me a proforma invoice with job order number J01026742 . While the technician had written the complaint ID I shared with him, the job order left that blank.
I paid an advance of INR 3, 000/=
The technician came back on the 20th August with the motherboard. Replaced it, and found that the image was flickering on and off, and there was no audio output. He mentioned that a second part had also to be replaced - the electrical panel, and suggested that the TV be taken to the service center to check thoroughly and repair.
We dropped the TV at the service center, handing it over to Mr Sridhar, who was the Center Manager on the same day. NO ACKNOWLEDGEMENT/RECEIPT of any kind was issued, we were told it was ok.
When we called up to check, we were told that apart from the mother board, two more parts had to be replaced and were sent a new invoice with the repair charges . We agreed and asked to take on the repair.
Between 20th of August and the 11th of September, we had to continuously call the service center for updates on status of repair. There was a complete disconnect - the receptionist who answered always spoke as if the TV was still in my house, and would talk of sending the technician. A short while later, we will get a call from the Manager Mr Sridhar who insisted parts were delayed.
Finally, the TV was received on the 11th of september, with a final invoice which my husband paid off, and then noticed that the advance of INR 3, 000/- was not adjusted. We spoke to Mr Sridhar and the amount was returned to us by bank transfer a day later.
I discovered later that the final invoice quoted a completely different job order and date - J01129436 . I havent understood how this is possible.
We switched on the TV assuming all is well - and now find light patches on the display all along the bottom of the screen and on one side - AN ISSUE THAT WAS NEVER THERE IN THE PAST.
And this is also surprising given that the Manager confirmed to me that they had run the TV for a whole day, to test that it was working fine, before delivering to my house.