Thanks for taking the time to post on the community.
I'm sorry to read you are experiencing slow broadband speeds. I know how frustrating this can be.
I've managed to locate your account, and it appears you are being affected by a high peak time traffic fault in your area. The reference number is F004610449 and has a review date of 4th October. As this is a review date it can be subject to change due to the work that is required to improve bandwidth.
If there are any further issues, by all means let us know.