Bad Bad Service

I have been with DSTV for over 11 but have been treated with the worst service ever. I received an sms mid March that I can pay R250 for 1 I responded to the sms and I they tried contacting me but I missed their call I called them back the consultat confirmed that the offer is loaded on the system and her calculator wasn't working and I calculated the amount I needed to pay with 48hours which I did at Shoprite on Saturday after we confirmed everything on Thursday telephonically. Today I woke up to find that my services have been cut off and when I called I'm told the offer was valid until 7th of March and yet I got the sms for offer on the 13th and again on the 22nd to say it's been extended to 31 March 2019.I called them 3 times today and no one was able to resolve my issue. Payment done but I can't even enjoy the services I paid for.