OnePlus India — oneplus 5 bangalore servify/brigade road

Address:

560038

My phone started heating up near the earpiece, i opted for a repair, servify picked up my handset and repaired it and returned it after 20 days with pathetic service. The phone worked for 15 days and when the camera was used to click 10 pictures at a stretch which is quite normal, the phone started heating up again, i took the phone to brigade road for a repair, inspite of telling them that the phone has h. W issue, they downgraded the s/w from pie to a lower version with no success, the phone was heating up right then, i had an urgent flight next early morning so i took the mobile and returned the next tuesday, the staff doesnot know how to check if the system is under warranty or not, i had to show them that the phone has extended warranty, they took the phone and said we will repair it, now after 1 week they are sending sms for me to approve of the estimate repair, i checked the estimate repair and it says 26k, for a 32k mobile which is under warranty. I should not be paying a pie because the phone is covered under the warranty, i want to escalate this further, whom do i contact?? I am ready to go to consumer forum too.