MRF — Tyre Guarantee Issue

I purchased a truck 16 Tyre Truck in the month of March 2022 with registration number RJ26 GA 6202 . Now my nearby MRF dealer is Vinayak Tyre in Bilwa Tonk Road Jaipur .. I got one tube in defective format so I told the dealer to replace the same. The tube number is 1120 now the dealer is saying that we will replace the same with 1020 now. Why should I replace my upgraded tube with a lower number tube as I need the proper solution for the same ... As dealer is not helping me in this matter what kind of services did MRF giving to me kindly resolve the issue ASAP

Also attaching the claim form with this mail..
Regards-
Mangal Ram Saini
+91- [protected]