HDFC Bank — refund not received

Address:

Amreli, Gujarat

Hello, I paid Rs. 4830 electricity bill payement on 29th December and that time its shown success but biller declined so transcation was cancelled but my refund not received. Today 28 january I call to customer care and ask for my refund so payzapp team said we already gives refund on 18th january so I check my Bank statement but no money recived I also call to my bank customer care department with reference no. and also visit my branch but they have not authorities to solve this issue and BANK ask me to contact your PAYZAPP TEAM. so I again contact Payzapp but they still not take my complaint. I also sent mail with attached Bank statement for proof. [protected]@payzapp.in but its not giving me my cashback.