Standard Chartered Bank — Getting calls from the bank regarding credit cards although I don't have any relationship with them

Dear Sir

I have received several calls from the Standard Chartered call center for credit cards. I have this morning received a call from +[protected]. I don't have any account or any relation with this bank. I don't know how they got my mobile number. This is despite me putting myself on the DND and DNC list several times. It is a very frustrating experience since its been happening for more than a year and I believe as a consumer I have a right to complain on this matter. Request you to guide me further to consumer courts/other forums so that Standard Chartered can be penalised financially.

Regards
Shadab Hussain