Breach of contract

I was contacted by a Geraldine (guy) stating he is from head office and is offering a promo deal as I wasn't using my night data on my 5 gig anytime 15 gig night package. The deal was I lose my night data in exchange for a myfi router with my 5 gig anytime data in contact for a reduced price. We agreed that the deal will take effect end of the month. I found out I lost all my data as this new contract was forced mid month and forced me to purchase more for the remainder of the month. I received the incorrect router not as was promised and instead of 5 gig data I now get 2 gig with no night data even. I have contacted customer service around 10 times spoke to 3 supervisors to sales and upgrades departments and it's been 2 weeks and no one has contacted me with information on my situation where I was supposed to be within 24-72 hours. I am ready to cancel and never look back at cell c after this. I hope everyone reads this and avoids cell c. Customers mean nothing to them. Btw the phone was put down on me 3 times too.