MTN /Mondo is a ****

I have contract with MTN that I took through mondo, I have the following concerns : 1. I have received an incorrect package I got a package of R199 instead of R99. 2.I requested a change to my contract was told I cant I need to cancel and re apply cancellation is still not finalised I'm still waiting. I cancelled with the grace period 3. I received bill with fees that were not brought to my attention suddenly there's a R165 service bill 4. I have been billed on the R199 package whereas as its their fault that I got the R199