Alpha Debt management.

I would like to lay a formal complaint about this Alpha Debt Management company, which called me and asked for my ID number. When I spoke to the consultant I asked if they were calling from my bank. The agent said yes and I gave my ID number now I have messages saying I app**** for Debt management. Which I didnt. This is serious misrepresentation. ***** ***** *****. I didnt give consent to their application on my behalf.