Paytm Mobile Solutions — refund not provided yet claimed by paytm

Address:

560043

I had done a merchant voucher purchase on 1st April using paytm upi, merchant did not approve purchase but money got deducted but it was immediately refunded or credited back to my personal account, but a re-debit was done and paytm took my money again which was worth 3000/- . I have sent screenshots to them as proof, but they don’t care to refund or respond or acknowledge that fact. It’s been 12 days since they have my money. I want to register a legal case against them and sue them for this. I have attached proof of screenshot where money was first credited and then debited