Vodacom Alcatel router contract

I am really disappointed in Vodacom service after being a loyal client for years,so last year November during Black Friday I upgraded to a router Alcatel unlimited home connection.So since then until the middle of last month I have been enjoying the service.So all of a sudden towards the end of March the connection was discontinued.So I thought there was a problem with the router and phoned customer service which helped me to after a day only to tell me that it's not unlimited but it has allocated gigs.I told the agent that it's not what I signed for and she simply told me to go back to the Vodacom shop that helped me to upgrade.So I phoned the consultant that was assisting me and she told me that I am not the only one as there are a lot of customers with same product complaining.Its now the 2nd week and am still waiting for feedback.Apparently the manager at that Vodacom shop in Wonderboom Junction Pretoria sent the complain to head office and is waiting for response.I cannot pay for something that I didn't sign up for and besides why is that all this month's it was unlimited and then now all of sudden there is a change.I am sooo disappointed with Vodacom.