I'm sick & tired of MULTICHOICE

I'm on a compact subscription and i don't miss payment every month but now my account has been deactivated because I've been billed for premium package which i know nothing about. Last week i spoke to a consultant they activated it and they promised me that error will never happen again. Here we go again i received the same Sms this morning that I owe then my account was deactivated again. I HAVE NEVER EVER UPGRADED TO PREMIUM - I've always been on compact i don't know where all these is coming from.