Paytm Mobile Solutions — unknowingly wrongly purchased voucher has deducted amount from my bank

Address:	581317
Website:	Paytym

Because of a wrongly purchased voucher unknowingly amount of rupees 1000 got deducted from my bank account which was none of my mistake to select that voucher.
As i tried to do my premium payment through paytym mode automatically the voucher got selected and the amount also got deducted within no second.
As i raised the issue with it to paytym helpline centre yesterday evening they asked me to wait for atleast next 24 hours to refund the amount to bank but that didn't happen so.
Now they are asking to wait again for next 24 hours.
For me using paytym as a payment mode has put me into a loss and what is the benefit o[censored]sing paytym