Complaint- service delivery failure

I've been calling the for weeks. Every agent has dropped the line on me. One agent advise a call back has been raised. Never happened. Emailed. No response. Raised a complaint no response. Further to my issues with the incompetence of employees and their work avoidance. I now cannot get the tymebank app on my new phone and who am I supposed to reach out to? The people practicing work avoidance.