My apologies that you are experiencing slow broadband speeds during the evenings.
I've checked your connection and the downstream power levels are too high. For this I would like to book an engineer appointment to adjust these for you. I've sent you a PM (purple envelope icon, right corner) with some details for you to confirm please. Once you have replied I can go ahead with the appointment.
Also there is high traffic during peak hours which I have raised to our network department. Once I have more information I will let you know.
Paying customers should not have to wait months, even years to get the service they're paying for. This seems to be a common theme looking at these forums. STOP over-subscribing your services, it's getting beyond a joke. Also, a 10 day wait for a reply on here is unacceptable!