Unauthorized amounts taken off my account

Yellodata contacted me to sell me the R59 500MB contract and i told the woman i was uncomfortable to give our my details, however, she made it sound like they were part of MTN and that I was just confirming them. I have never received the 500 mb on my phone (and the sms's sent after the call do not tell you anything) - during the call she was mentioning things like Techtrace and hotspotter phonebox etc, at no point did she indicate that there was a charge involved on any of these. I see my bank account has been charged with the R59 (no data received yet), R39 for Hotspotter (never authorized this amount to be deducted) R35 Techtrace (never authorized this amount to be deducted) as well as R29 Phonebox (never authorized this amount to be deducted). I am absolutely FUMING!!!! So the cheap R59 bundle, has in fact ended up being R162-00. I will be cancelling and reversing all of these charges today.