Slow and pathetic service

I sold my car last year to a dealer and contacted Cartrack to remove tracking device to new one of which arrangements was done that I will pay R800 to do that. Today is the 7th of Jan, nothing has been done yet. I called in again asking them that they rather cancel since they are the ones who can't give me service, then I was told of R1000 cancelation fee. How do I pay R1000 cancelation fee if you are the one who don't want to give service to your customers, I am the one who is supposed to penalize you that R1000 for not keeping up to your promise. Your call center is so rude as well and can't give solutions to this. Please advice