Paytm — Merchant denied service and bank stopped helping me

I made Payment on aug 4th 21 using Paytm upi later merchant refuses to give service so i reported the matter to Paytm within time and raised the complaint later Paytm failed help me and asking to contact merchant bank so i contacted merchant bank they said they will ask Paytm to contact i informed same but now Paytm telling time over can't help me i m following up from last year no one calling from Paytm