Dell India — faulty laptop and inadequate services

I own an inspiron 5570 which is a refurbished laptop i received as a replacement for my first laptop inspiron 5555. The inspiron 5555 showed issues within 2 months after purchase. The hard disk had some problem which was diagnosed with support assist application. But when i requested service on the issue the representative asked me to run diagnostics from the bios. Unfortunately, it showed everything is perfect. So they denied any further assistance. But i was unable to read or write anything on the hdd (Actually it was too slow. 5+ hrs to copy a film which has about 900 mb). So i visited carry in the centre near me. From there, they replaced the hdd and fan (I lost all my data, photos, study materials etc.). After two months it again got issues and repaired again. Almost every part including the motherboard and body covers were replaced (Hdd and display were replaced 3 or 4 times). Last time i faced multiple issues i was asked to visit the carry in the centre which i refused because the last time they repaired the laptop. I lost some screws and got scratches on the body and display (Even on the edges of the touchpad). But the representative mr satnam singh said he will take care of it this time. But after one month i received the laptop with furthermore problems it was heating more than 100 degrees while idle. I mailed mr satnam singh about the issue but received no response. After about 10 or more services done on the laptop, they agreed to provide me with a refurbished laptop as a replacement (Which i own now). I was told it has some tiny scratches on the body. To be honest it was really tiny. But there was a tiny part broken from it too. A small part at the air vent (Which i wasn't able to notice first, my fault should have checked it properly) and some missing screws. But the main problem occurs later the new laptop started to show what the old one was showing. I got multiple issues just after two months o[censored]sage. The fan stopped working, the display started flickering while watching videos (It flickered even while idle, but my bad it occurred very rarely when it was idle) and some keys stopped responding (It responded when i click it really hard or when pressing continuously). Since the latter two was intermittent i recorded both and mailed it to dell service escalation team (Because satnam singh was the one responded to my mail at first). They scheduled service and the engineer visited me. He fixed the fan issue. But my bad the flickering and keyboard issue doesn't show. I showed him the recorded video but he wasn't convinced. He called the escalation team. After some arguing, they said they will replace the display. But i refused to do so (I was really angry and frustrated) and dropped the call. But after the engineer left. I used the laptop properly. I was almost convinced that the flickering was due to overheating. But the same occurred again. The bad i got really frustrated, i closed the lid really hard. That's it the flickering was solved it got broken. But i really thought i might get an exception after all that they did but nope they want me to pay to replace the display. But i don't want to waste (Warranty extension is another story) any more money this trash. If they would have done what they are supposed to do in the first place. I lost my money and laptop (I know i broke the display, but you don't have any idea what i feel when you are getting cheated for two years from a global company like dell).
When i requested for warranty extension through their website i didn't receive any replies. After one month i mailed to one of their executives later two executives from dell told two different prices for the same plan (Even the executives don't know what they are doing). First ms rani mandal showed two plans 1 yr for 5499 rs and 2 yr for 6499 rs (Both were premium supports). After i agreed for the 2-year plan another woman jyoti anand mailed me another plan which has 9500 rs 2 yr premium support and 8500 rs for 1 yr. When i enquired about the above offer she said she don't have that offer. When i asked what is the difference between her and the other executive i didn't receive any response. I had no other option since only 1 day was left on my warranty (I can't even imagine what it would have happened if i didn't extend the warranty). I attach my post in the dell community which has every service request numbers and details of each service done. https://www.dell.com/community/Inspiron/FANTASTIC-LAPTOP-AND-SERVICE/m-p/7332428