This happened to me just recently,
I had a fido plan at 67$ and added another phone at 75$ minus 10%. I called to see if i can get a rebate because people i knew had better deals than me. They gave me a total of 5$ off my bill, but took away my 10% and added 5$ so now i'm paying more than i used too. How dumb is that? Time for a change, I've been with them over 10 years. What service. Contacting all my friends to make a switch.