I have been calling ...

I have been calling multichoice dstv canceling internet router, their agents are telling different explanations, I had already paid R1700 to cancell, on my fourth call I was told that there's other amount I must pay after I paid a settlement amount, they are ***********, liers, their rules keeps on changing everytime we call I am ****ed off by DSTV Miltichoice , can they train their agents well.