TELUS customer service is horrific. Time to go elsewhere?

I have never been so frustrated with a company.  It is impossible to get answers from Telus.  My bill has been changed several times since signing up with them a year ago after a promoter came to our door and drew us in with enticing offers.  She even said Telus would pay for Shaw's contract penalty to move us over.  I regret every second of moving.  It takes up most of the afternoon to talk with someone at Telus.  Hold times estimate an hour only to be forwarded to someone and put on hold for another hour.  My contract agreement shows what my bill should be but they arbitrarily change my bill to 100.00 more a month.  Even though my contract says promo price is for two years my bill says it is one year.  After spending an afternoon today trying to get help, after the third person I spoke they said they will look into it and call me  back.  I did not receive a call back with answers.  This is completely unacceptable.  I regret signing up with Telus and will tell everyone I know to never sign up with them.  Out of curiosity I called Shaw and immediately had the call answered and the person I spoke with was clear and articulate.  Feeling trapped in a contract and at the mercy of a giant system that has no help for its customers.