rudeness

I always get a call from *** and today i asked the lady who called me where is she calling from and she 1st didnt wanna tell me than said ackermans. Your call centre have been calling me everyday even at night and i keep telling them that the people they are looking for no longer work with me. Today at 8:47am a lady called again and she gave me an attitude and she was rude to me when i ask her to remove my number since i dont work with the person she was looking for.I want this agent to call me and apologies there was no need for her rudness towards me, i dont owe ackermans and i dont want to get calls from them anymore.