Really unhappy wish my contract can end already

had a contract with nashua and was given over to MTN in oct of 2014... rec. a laptop, no branch in capetown can ever do the windows so that laptop is off now use to me. we always have a problem with the fixed installments a person with the name of Luciano,Nomfundisa/Alroy. i dont knw what to do anymore, i can even copy every month's emails into this report, i am tired, mtn is just the worse supplier ever. When i or my husband try the customer care number 808 from our cell or the other care line form a telcom phone , it says the they experience high call volumes and i should ask for self help services and then when i get through it says the serive no longer in use. My and my husband's phone has been off since this morning, because we were waiting on a reply as to what payment should be made again this month, since the beginning of july. they say we in credit but different sms are sent to me to pay. My brother opened a contract with them last year, he never paid it and this year they called to say he owes them a super small amount which is obviously wrong. It very funny i think but i am very upset i need a contact number for a person who can assist me. I really think Nashua'sbest