********* business deal

I got a call from Elite Mobile, insisting on selling me a Tablet plus 500MB data per month at only R79pm x 24. That is a good deal and I agreed to this. It was constantly confirmed, as I suspected that there will be a catch, that it will ONLY be R79/month. At the end of the discussion the sales lady started rambling contract terms verbally at quite a fast pace and I stopped her halfway and asked her to confirm yet again that the deal will ONLY cost me R79/month, which she confirmed. However, minutes later I received an email and the total cost of the deal after \value added (?)"services were added is now R265 per month. That is a HIGHLY ********* and very underhanded way to do business. I want to cancel my deal"