Dissapointed customer

I got a call from one of Mtn consultants, giving me an offer for LTE router, I took an offer under false information, I was told it's unlimited data and I can move the router anywhere after that I moved from my home to where am working it stopped working I called them they told me it's one address locked and 120 GB. I called Mtn wanting to cancel the contract they told me I have to pay R5000 cancelation fee whereas I took the deal under false information. Am so dissapointed with mtn their consultants are telling lies to make sales.