HDB Financial Services — Money has been deducting

Respected Sir,
I'm Md Tanveer from West Bengal.
Loan no: 25694158.
I have taken a phone on HDB Finance Services.
It was a digital product loan.
It was 20, 727 amount financed.

I'm a student. When I pay on time why these company deducting my money without any information.
I have sent them mail 2 days ago tried to contact them mailing them since but no response from them.
Without resolving my issue they deducted my money once again.

* Rs. 2683 which I have to pay every month. Money did not debited from my account. I deposited 2700 in my account on 1st October at 3:00AM.

* 12 October unnecessary there was a deduction of Rs 295. Mandate fail charge.

*15 October unnecessary money deducted from my account without any information.

I paid my loan amount 2683 through Paytm when the money was not debited.
[protected] UPI/DR/[protected]/ HDB FINA/PYTM

Please check it and do the needful. Please don't charge unnecessary when I'm calling service centre no one picks up the call.
I want my refund back because I did not break any of your guidelines you can't charge me unnecessarily. Please reply as soon as possible.
Alot hope from please help me out.

Thank you
Md Tanveer