Paytm — Refund of Rs 3500 is not deposited even after 12 days

Address: Aligarh, Uttar Pradesh, 202165

Website: paytm.com

I made a transaction of rs 3500 to my account and hen i returned it to bank but there is no such deposit of that sum in my bank account
i contact paytm customer care they are saying that they have returned my amount to my bank account and told me to contact bank. i went to bank but there is no solution till now
please do something because i am so frustrated that i cant tell u
i made an uncountable no. of calls to paytm customer care