TVS Credit Services Ltd — No updation on app

I have paid my balance amount on 17th of June of Rs.9323.As there is no update of this information on the app the amount is getting recovered on fastag and it is around 3000rs. I have contacted your staff several times through call and message but there is no response till date. Just delaying customer will only make the situation complicated. So either update the information on the app and provide me with the refund or else I will close the fastag services for myself.