Terrible service and filled with empty promises

Terrible service from when I signed my contract. It took 3 attempts to get them to come and connect my device, to only get there and then indicate they couldn’t deliver what was agreed when I signed. Again two attempts to get a control from there. There are booking made, but no one arrives or even calls to indicate they no longer coming. It has now been weeks and I have still not been able to get a response on how they get into my estate. If I have a real emergency I cannot open from my phone and it’s something no one can help me with. This has been by far THE WORST company to deal with. No one knows who the manager is or even how to escalate bad service.