LazyPay — Transaction

Guys need help
Regarding LazyPay
Maine 2019 mai kuch transaction keya uska outstanding amount 2123 tha to maine use upi ke thru pay keya apne bank se but payment failed hogaya aur amount debit ho gaya mere account fr maine again same amount ka payment keya upi ke thru wo sucessful ho gaya..
Maine apne bank mai complaint keya jo transaction unsuccessful huya tha uske leye wo to unhone ko refund kar deya..
But lazypay app mai transaction update nahi huya then maine complaint dala lazypay mai to kuch din bad unhone payment update kar deya..
But suddenly abhi kuch din bad lazypay ka email aya ke apka jo amount tha wo apke bank wo charge back kar deya apka ye amount outstanding ise pay kare aur call bhi aya maine kaha maine ye already pay kar deya tha 2019 mai to ab mai kiu karu unhone kaha wo to chargeback kar deya maine kaha jo failed huya tha wo charge back huya jo sucessful uska kya unhone kaha bank statement email karne maine sab kar deya but koi response nahi mil raha bar bar ye keh rahe hai hum check kar rahe etc 15 days ho gaye but koi solution nahi mila per day late fee bhi laga rahe hai usme 12 rs..
Guys kya karu smjh nahi aa raha hai pls help..