Breach of contract -

Last week I received notification for a promo upgrade which was valid till Sunday 26/08. I went in on saturday to gather more info then deciding to go back sunday and upgrade my contract. 1 - Sunday - When attempting to upgrade - there appeared to be an open application by Summer Sun Trading - Still dont know WHO they are - why they have app**** on my behalf and most importantly WHY MTN has allowed a 3rd party to do so in the 1st place without my consent. 2. On Monday after ME calling to get feedback - the consultant dealing with (Boikanyo) asked me to come in store and sign the upgrade forms and do finger prints has he managed to sort out the issue - get to the store and not completed sort - was still a long process. However , eventually upragde went through, signed, fingerprints done. New package comes into effect immediately however it was missing the data promo. Boikanyo insisted he would escalate it and get back to me after 24 hours. 3- Wednesday (midday) I call for feedback as know one has bothered to get back - he says he will look into something and call me back in 10 minutes - NOTHING!~ 4- 24 HOURS LATER - as I type this - STILL NO FEEDBACK. Im tired of trying to get an update from MTN. They are now in breach of their contract by not providing me with stated promo details.