Worst service ever

I app**** for DStv internet on the 1st of April and still unable to use it, it keeps on losing connection when i call or chat to the agents they ask me to reboot all thr time I have stopped using it. Now DSTV has increased my instalment without informing me. Their call centre agents are rude, not helpful and *********** they are clueless with every question I ask. I don't know what to do. My monthly installment has doubled and I cnt seem to get an explanation for tht.