wrong information about expensive Mobile data

Dear,<br> <br> After getting information about Vodafone Mobile WI FI R206-Z, the Manager told me it would work very good.<br> So I bought an expensive device of 1000 ZAR on 24 of March 2015.<br> She also sold me mobile data : 1400 ZAR for 20 gigabite, telling that it was unlimited in time.<br> The moment I was going to pay, all of a sudden it was limited!! but it would be for 2 months, I would need it!<br> (so I payed 2400 ZAR!)<br> The internet was not really good working, so I went back after 2 weeks.<br> If I could come back later, the manager was in meeting. I went back, the device needed an upgrade, already??<br> It took a lot of time, in the end they even needed my own mobile data to do, the computers did not work in the shop!!<br> I had to come back several times before it was ok. That moment we could see, I only used a few data, NOT at all 1/4 part...<br> So 24 of April (after 1 month) all of a sudden internet was finished. We were not using it much, I'm sure it was not finished!! Only because it expired after 1 month instead of 2 months or unlimited like the manager told me!!!<br> So I think they have to give me mobile data, because they sold me things that were not correct, I payed 2400 ZAR and I did'nt used it!