T-mobile really screwed me over CANCELLED ME Without NOTICE!?

Bill always up to date 5 phone lines, one for my business, 8 year loyal customer. Said I was Roaming too much! My contract says unlimited roaming, and have been for years. They lied and said they were paying the other towers .50/min when I roamed. hmmmm thats a thousand dollars a month! I lost business calls. I received no letter of termination or warning by text. NOT GOOD BUSINESS! I'm out and never coming back. I suggest no one sign anymore contracts just for a lousy new phone either. This really takes the cake.