Thanks for taking the time to post back on the community.
My apologies that you are experiencing slow broadband speeds.
I've managed to locate your account and the downstream power levels are too low at - 12 dBmV. For this I would like to arrange 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.
With the power levels this can cause issues with stability/speed. If you prefer you can monitor the connection over the next few days and if you notice the speed drop or disconnections let me know and we can go ahead with the appointment. Or we can get these adjusted by an engineer when you are available.