Formal Complaint against Telus

I have been trying to get help with my home services since November 4th.  I have escalated it to the escalation team.  The level 1 did not even read the notes on my file and could not understand what I needed.  I asked to speak to a supervisor who was going to call me back.  I have had at least 5 CSR tell me they will call back to ensure I get called by the escalation team and no one has called.  The level two has never called.  The CSR is terrible.  I have been with Telus for 30 years and I think it is time for a move.  Where can I put a formal complaint in besides Telus?