Bad network service and horrible network service

I Called 136 in the morning due to network and data issues I am having. I was give. A number *** to call. I called that number explain to the lady about the issue I am. Having I was told matter is being escalated and I will get a call at 2pm or sms feedback none of that happened I called back spoke to a guy explained everything and told me that he can't help. Cause I. Was not given a ref number. I asked for a manager and I was put on hold for 30 mins and called again and spoke to manager Chris and denied to give me names of the previous agents and that is a bad service. My data connection is bad. The line cut while. Speaking to manager Chris then line cut and I was never called back. I want my *** to be canceled and this devices taken back I will be canceling your debit orders I will not pay for such service