SERVICE DISCONNECTION, WRONG BILLINGS, FALSE INFORMATION AND BAD SERVICE

I was automatically upgraded by multichoice from my compact package to premium package , I won a competition that was running in December on my dstv app..now my services have been disconnected when I contact multichoice am being told to pay R400 in order to reconnect my services bacause I upgraded to premium which I responded and told all the consultants (20) that I didnt upgrade I was upgraded by multichoice and also explained that the email that was sent to me stipulated that there won't be any additional costs to my account to my surprise that was a lie hence I explained that I wont be paying any additional fees as I have already paid what was due for the month ...this has been going on and off since the starting of January till today I have not yet gotten any responses regarding the matter,I am also experiencing incorrect billings on my account each month. I have also sent countless emails to multichoice but up untill this date there is no reply. I won't lie I am annoyed and not happy at all and also am paying a lot of money each month to be getting such service am even thinking of getting OPEN VIEW HD which is a once-off payment that I wont have to complain about.