Why offer something and now have to constantly call to resolve

I have been calling Multi choice for days now trying to resolve one thing. I was originally on compact and received a message from Multi choice offering me to upgrade to DSTV compact plus for two months and that in the second month I would be upgraded to premium at no extra charge. I sms'd yes to 34210 on the 22 March and then called into the call centre to upgrade. I am in my second month and still nothing firstly I would not have upgraded had it not been for the offer that they gave me. I called in again on the 2 May reporting issue spoke to Moosa and again on the 3rd May as I was told someone would call me on the 2nd May 2019. I spoke to Nosipho who gave me ref# ********** 2-I203 and she told me issue would be resolved within the hour. I called in again on the 4th May spoke to a supervisor called Thandowenkosi he promised to call me back on the same day but still nothing. I called again yesterday asked to speak to a supervisor and I was told that they were in a meeting and would ask one to call me back but received no call back. Could someone please get back to me ASAP.