Vishal Mega Mart — Taking double payment for shopping

Address:

Saharanpur

Today I Mob. No. [protected] have made shopping at Vishal Mega Mart Saharanpur and firstly made payment through UPI app Dakpay for which amount was deducted from my account but the person at counter stated that he has not received payment and asked to do payment again and said that your amount will get refunded than I had made payment again through Googlepay.
But still I am not received refund of my payment made through Dakpay app. Please look into the matter as both the transactions are shown successful and arrange to refund amount of one of my transaction back.