Sick and tired

Goodevening,i had 2 contracts with mtn,in Feb i decided to terminate them as i was looking to buy a home,i called the mtn cuatomer care and was given an early termination fee of R2133.00 to pay,which i paid at the Mtn store in Westgate shopping centre on the 22nd of Feb 2018.on the 25th of Feb they debited my acc again,when i phoned to enquire i was advised that it was the last https://t.co/S7IJoqXx3I my surprise in March they debited again,i phoned retensions dept and could not get a clear explanation,i spoke to a lady called Gugu who advised me that the fault was on mtns side and that she spoke to her senior who advised that they would attach a "credit note" and that i should not worry,the contract would be https://t.co/iWD7i9QqBc date i was never given any feedback as to whether that was done,no communication from mtn,to my surprise i find that mtn has put an adverse listing on my credit report saying that theyv commenced legal proceedings for an amount of R500,now im puzzled because ive phoned retentions on numerous occassions and was advised that the contract will be closed ,never was i made aware that mtn has now decided that i owe them and plan to put an adverse listing,and as far as i know as a consumer i have the right to be made aware of such before a creditor does that,im amazed that after paying mtn excellently,and after being promised that all is sorted i am now adversly listed,now im in the process of buying a house and should this result in me losing my loan it will definitely be on mtn,because no proper channels were followed,i need mtn to sort this out as soon as possible,its uncalled for.