we are very sorry to read your issue here. Best way to resolve your any concern is to send an email to care@paytm.Com. We are available 24 hours and all 7 days in week to resolve any issue.
Remember at paytm, we give you a promise that unless you have received your recharge, your money is yours.
We have already completed the refund process of Rs. 300 from Paytm side for our Order Number 5736038.
Remember, if you do not see this balance in your bank account yet, it is because your bank does not reflect this refund instantly. You could check with them on time it takes for such refunds to show up.
Should there be anything else, let us know.
Paytm Customer Care