Unnecessary Calls

Okay so i had a financial issue a while ago. And i had a home choice account. Well it was handed over to VVM Attorneys. They called me and we made an arrangement. Every month on the 25th i have made a payment and Homechoice send me a message thanking me for my payment but never correspond with their attorney firm about my payments. This is very annoying coz these people call me every single month and on top of it all their consultants are rude. I have sent them a complaint and no one has ever responded. So now i am here. I am so irritated by the calls and if i do get another call again unfortunately. I will have to ask my lawyers to contact them for harassment. Can i never ever receive a call from them again. I will close my account pretty soon and other companies i owe just send a statement and shut up. But vvm calls when i owe them the least amount of money. This is annoying do something please.