BAD SERVICE

I am very disappointed from the service I am getting from your company MTN firstly I was ****** by one of your staff who upgraded my contract with out my consent, when I took this contact I did not want anything expensive because my child was going to use it I signed up to pay R129 then I was called by someone from your company saying my option has been phased out and I told her I DO NOT WANT ANYTHING THAT WILL CHARGE ME MORE AND DEFINITELY NO UPGRADE!! But she went ahead and did her on thing and this is really frustrating and you guys are *****s, now I am stuck with this problem. I cancelled and they gave me the settlement amount and I paid it in August (my proof is attached) and I was never told that I need to go to the one of the branches to cancel when I asked for a paid up letter I was refer from pillar to post which is totally not service, WHY ARE YOU DOING THIS TO ME THIS IS GOING TO AFFECT MY CREDIT SCORE. So yesterday I went to Hemingways Mtn Store and a rude arrogant lady full of attittude by the name of Fezeka Mambo gave me the worse service ever giving me a wrong email address and she told me that I still need to pay R400 and something where as I have settled , Really this is not on why are you robbing us?