tablet collection for repairing

I called fonechoice to come and collect the tablet that is not working because of the problem that it have. My tablet is working on charging port so i called Fone Choice on the 17th of November 2014, they promise to come and collect it. The problem is that until now they did not come to collect it. But i pay for this useless tablet. Fone Choice Consultants may you pls tell me what i must do now. Because right now i think its time for me to stop payments so that you can take my request as the seriouse one.