MONDO - unauthorized upgrade

Dear Mondo On the 7 September at around 9am I received SMS's about a order/upgrade that is being done on my MTN contract. After 2.5 hours and a visit to MTN Somerset Mall we found out the doggy company that is doing this. MONDO I never gave you permission to upgrade my contract, So who told you can do this or is it part of your ********* business practices? Mondo did contact me early the year but the upgrade was decline due to some error, we decided to just leave it till later in the year. After the upgrade was decline and I decided to leave till black Friday your operator proceed to tell me I am not credit worthy, this is after my my contract value will be decrease to R150. I told him he does not know what he is talking about, How can I not be credit worthy for a R150. He decided not to continue the conversation and put the phone down in my ear. Very good customer service indeed. This initial yes that was given several months ago does not mean you can use it to upgrade me anytime in the future if you feel like it. You can not just ignore my "lets leave it" comment and then upgrade me several months down the line. While chatting to your customer service and telling her to cancel the unauthorized upgrade she still want to tell me how great this deal I have MTN had to make my contract prepaid to get rid of the MONDO upgrade, so now I have to apply from new when I want to upgrade I find you business practices ********* and doggy and do not wish to ever deal with such a company at all