bad service

I am very disappointed in the service multi choice has given me my service was suspended twice for no reason, my account was paid on time and I was charged a penalty fee to change my billing date which I paid on the 20th of may on the 30th my service was suspended I called in I was informed that my account is paid up and they apologized for their blinder and was promised this would never happen again, hardly 24hrs later on the 31 May at 2:30 I'm the !morning my service was suspended again after being told the mess they created was sorted, I had to waist my airtime again to call in to get my service reactivated, what angers me is that I had to pay a penalty fee just to change my billing date even after paying my account on time which to me till this day doesnt make sense to me, this is not a way to run a business , I am a new client and I'm already not happy my experience as a new client has been ruined and this is unacceptable.