Thank you for posting for the first time I'd like to welcome you into the Community
I've had a read here and I'm sorry that this issue has been happening to you. I'd really like to help out here and with the Netflix not working as it should I can imagine it's not the best.
Looking into the connection and boxes in the home I've been able to see that the downstream power levels aren't working correctly. This would need to have an engineer to come out and adjust these to bring the services back to normal again.
I've sent you a 'Private Message', you can find this by clicking on the little blue envelope near the top right of the page.