OMG..Telus is so bad

What is wrong with Telus Customer Service.

i was on the phone for 4.5 hours today as my agreement is about to expire.  All I wanted was to continue service as was quoted 155. for that.  I asked how much if I added Disney and he put me on hold and came back with 167.  I agreed even knowing I could do it for a couple dollars less if I did it outside Telus but went ahead anyway.  I got the agreement and what he did is remove Netflix from my previous service and put Disney in.  So I called to get it cleared up and they could not do it!  
I should have just left Telus and might still do that because during my last two year contract, every month I would get a new bill with a new price…usually about 10.00 more.  I would call they apologize again, and again, and again.  Why do you think it’s so bad with Telus and what is a person to do?