Bad customer service and not knowing how to fix issues7

I move 2 of my decoders to holiday home. Everytime I'm at my holiday home and request activation it takes more than 2 days for activation then my other decoder stops working. I always phone multichoice and hold for more than 20 minutes all the time with no help. I always complain and get told they need to escalate my query and they will call me back. No one ever calls back until I phone again. Every month for the past 3 months have been having the same issues.