Waiting 11 days for activation is not on!

We moved and I gave notice end June. I was told that my line will be active by 26 July at my new address, as there is already an installation. It's now 29 July and Frogfoot only has a technician available to come out 6 August. I assume I don't have to pay for the time I don't have internet? They are quick to debit order me, but I'm not getting the service. I can't take work home at night, because I need internet. This is a problem with my workplace and workload. No work = no pay for me.

Should I just cancel Fibre and get a Sim card from a different provider? Because I'm done with struggling with unhelpful people.

They say their technicians are fully booked, well let them also work after hours. I'm awake till 11pm and up at 5am. I'll be happy to accommodate them after hours.