Terrible service, I want to cancel

My experience with Telus has been terrible from the beginning. First, I spoke to a rep who would give contradicting information. Then he  harrassed me, calling me on his personal phone to demand why I didn't want to deal with him. I started talking to another rep who promised to bring down my telephone bill to $35, offer 3 months free to "try out" and I could cancel if not happy. We received the new sim card which didn't work. After several calls and hours, I was told Telus couldn't honour the $35 that it was a mistake. In the meantime the Internet started to slow down. I received an invoice charging for Internet service and after several hours on the phone explaining to several people what the rep had promised, several weeks later the charges were cancelled. After all the unfulfill promises and quality of Internet which is affecting my work productivity, I called to cancel. Again I was on the phone for over an hour, was told there would be a charge for cancelling and finally transfered to the wrong department, who transfered to another department and eventually someone hung up.

When I try to reconnect my Bell modem, the fiber optic cable is missing. The Telus technician only left the power supply cable but not the fiber optic. I called Bell and they said I'm liable for the cable and must call Telus to bring back the cable, and disconnect Telus 

I emailed our customer retention manager who said he can't help us. The rep Luis said he didn't work for us so we shouldn't be demanding. And I never heard back about my complaint on the rep harrasing me. 

Needless to say I'm fed up and want nothing to do with Telus. I want the Internet service cancelled and disconnected at no charge, and my Bell installation re-establish without affecting my job. IMMEDIATELY!!!

I want the right person to contact me, and get this done ASAP without wasting any more of my time. Telus should be compensating me for all these misconduct!!!