Wifi Router issues

I am very upset with the level of service I have received in the last few days.Got a RTL30VW router and it has the latest 0.0.22 firmware on it as advised by tech support agent.Now the thing does not connect so on the router no WAN IP address or so no internet connection on my contract sim card, did 2 sim swops and still the same issue while I pay my account you do not resolve my issue and I will stop paying it this case because there is no connection I am paying for a useless service that is not working.I bought a pay as you go sim card wit 500mb and it is working 100% only the contract side issues.Please resolve at your expense and to my doorstep as I refuse to drive to another store where your staff are rude by the way and not qualified to assist clients.Or please cancel my contract so I can go to Vodacom a real service provider.