Sales representative lies to make a sale

I was on the phone with a sales representative from Mondo who partners with Vodacom. He presented me with the option of cancelling my 500MB bundle and getting a 2GB bundle when my contract expires. I explicitly told him that I'm not interested if I can't get the 2GB on my primary number so he told me I shouldn't worry as I can transfer the data to and from the different numbers as required. This made me agree to the deal. I'm looking to Vodacom for a solution. If I can't get this data on my primary number I want this new \contract"to be cancelled. You can't go around lying to customers to make sales. I received the call on 19/06/2015 at 10:03 am. I agreed to the deal under false pretences and hope that Vodacom can resolve it as I've been a happy customer thus far."""