Contract Issues

I made a new application with a consultant from Midway and lady that was helping me referred me to go to Vodacom Pavillion to collect my router while I was there the consultants were talking to themselves complaining about helping with someone "else's sale"so they say, I signed and went home and nothing was explained to my suprise today I got a notification of the debit order when I chose the 20th and I was debited more than the debit order and mentioned that nothing was explained when I went to sign when I spoke to the lady that helped me she kept saying that information was explained in Pavillion about some prorata but that was not my main worry, I'm ****ed at the fact that their router is not working and I have drive back to Pavillion and now my account is messed up because I didn't have money to cover that debit order and it hasn't been even a month but I'm having so much issues that are costing me time and money for extra petrol to take back the router and I have to go collect it again an now this it is just pathetic