IDFC Bank — Too many spam calls. Multiples calls in same day from different number

Address: B-328, SLS Sunflower apartment, Bhoganhalli, Bangalore

I'm getting too many calls from IDFC bank telemarketers. I told multiple times that I don't need any service and I'll contact back if required. But its no use. I started blocking the numbers. I get calls from different numbers. That too more than 5 calls in a day. I feel exhausted because of this.

I got a vehicle loan from "Capital First" Finance 6 years back. They got my number that time. After it has become IDFC bank, I'm getting these kind of annoying calls.