Sorry to hear about problems with your broadband. I have tested your line and there is no fault. There was ongoing connection for 114 days, speeds are correct. I have created ticket on your account with results of testing. You can find it here
There are few errors on this line so I can suggest to connect your router into test socket if it wasn't done already.
If you are having problems with speeds over wired connection please raise it on https://faults.plus.net/ but please be aware that together with our network partners at Openreach we are prioritising customers who don’t have a phone line or broadband connection, meaning there might be a delay in Speed Faults being fixed. In the meantime, please raise your speed fault online at faults.plus.net.