Bhim Upi — Refund

I had deposited amount of 8800 on 19 may 2021 but the amount has not been credited in the merchants account but has been deducted from my bank account but till now the amount has not been refunded in my bank account the merchant said that they had processed my refund amount on July 2 but till now the amount has not been credited in my bank account I inquired from the bank and they said that the amount has not been credited in my account it's more than two months time