Amazon India — Return process getting cancelled every time of a laptop

I had ordered an laptop on Amazon on 2 oct and received it on 7 oct as i received it nd opened for setup the screen was not atall working properly so i applied for return within a hour . intilially i was said tht i would have to wait for technical department vist so as they said i just waited for it but tht guy just called me and said to send pics of it nd assured u would get a replacement but later whn i contacted customer care they said like no stock so they would provide refund on return, i accepted it . initially it was scheduled on 12 oct but it got a failed tht contacted CC they said next time pickup would be for sure so accepted it nd waited on 16 oct even on tht day it was failed . again called CC they said 19oct would be for sure but again got disappointed as it got failed now CC said 22 oct is last for sure if this time it gets cancelled we would provide advance refund but now on 22oct again got failed nd as i trusted Amazon Customer care called them again but now they r saying like no there is no such police this was a total shock again they have rescheduled for 26 oct, how can I believe even this would not fail this time, lost my trust on customer service now, wht shd i do if even on that day it gets cancelled or failed, i desperately wanted a laptop in this month had some online intership to complete nd submit but now wht to do no laptops there. doing it in mobile is highly impossible so plz help me out solving this problem .