My Money Mantra — they have steel details like number, address etc.

This company is fraud.
Suddenly one day i got some credit card type from this company
I have never heard about this company and i have never shared any details of mine to this company but still they have my name, address mobile no. Everything.
When i ask them how they got the number the response was i have only shared it but when i ask them how and when i have shared that information they are not providing by saying its against their policy.
This is a serious threat as my details are with them without my concern and they are not also sharing the source if i have only shared the details. Which means they do buy this data or steel this data.