Paying for something I don't have!!!!

I signed up with Telkom in 2012 and have been on the 10gb + 10gb night surfer for R299 until I received a call from one of the representatives on the 11th of February 2015 offering me 10gb + 10gb night surfer at R199 for being such a loyal customer. Ofcourse, I said yes and he said it would be active immediately. Since that day, I have not received my night surfer and been paying the R199 since then. So I have been paying for something I LITERALLY do not have for 3 months and every month they have been deducting the funds. I have been calling the call centre, managers offer call backs but they never actually call back. Cases have been logged and closed as they are not able to reach me and left a voicemail, the last agent told me that on the note stated the agent contacted me but to my suprise the call was made to my data sim card. I checked my voicemail and there is no communication from TELKOM, besides dead air on voicemail.<br> So when will Telkom actually be looking into my cases and resolve the issue that has been going on for 3 months