Homechoice Harassment

This company is harassing me and I have been getting phone calls up to 5 times a day, regarding payment on my account which is up to date. I have a fixed debit order that runs every month and despite that they keep on calling me. PLEASE CAN SOMEONE FROM THIS COMPANY SORT THIS OUT AS I HAVE HAD IT WITH THIS PHONE CALLS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!