Airtel — double payment on broadband connection

I'm Sugumaran and i got a new connection form Airtel xstream from 17 th April 2020. During the new connection payment 1st time i have paid Rs.2828 on 13th April 20 through your airtel using my Debit card. your office people said not received payment. But amount has taken my account.
Then 2nd time i have paid Rs. 2828 to airtel using Online payment on same day 13th april 2020.2nd times transaction amount also debited my account.
After 1 hr received a message saying 1st time transaction amount decline. But I am not received from airtel.
Our details is

My no is[protected]
Name : Sugumaran
Mobile no. [protected]
Pls refund the amount as soon as possible.

Regards,
Sugumaran