My fibre 65 via copper wire is slower than normal

[Sallyuk65]

My fibre 65 via copper wire over last week and half as been slower then my guaranteed speed,  I started on 42 Mbps my guaranteed  speed is 37 Mbps and now down 30 Mbps , I have followed the trouble shooting and nothing, I had a engineer out on the 7th November  who fix it but as of Tuesday 18th a storm came internet was off when I got up,  I spoke to talk talk customer service they sent some one out on 25th November he reset the box replace the front plate of the  phone socket,  tested the speed and he could not get it working any more then 31 Mbps did not have any equipment to test further and  then lefted, my speed is still on the 30 Mbps and it should be 37 Mbps and over  and in  the case file says it was fixed but it wasn't fixed hope someone can help this keeps happening.

[amahle-TT]

Please confirm when did you start experiencing this issue?

[Sallyuk65]

Your welcome thank you 

[amahle-TT]

Got it, thank you @Sallyuk65 

[amahle-TT]

Click on my name and you'll get taken through to my profile from which you can send a private message, thanks.

[Sallyuk65]

How do we send a private message 

[amahle-TT]

Please confirm it in private. 

[amahle-TT]

Thank you, do you have a mobile number you can provide us so we can contact you if needed?

[Sallyuk65]

All done 

[amahle-TT]

We'll now need you to plug your ADSL cable straight into the broadband port of your Master Socket.

After that plug the other end of the ADSL cable into the broadband port of your Router.

[Sallyuk65]

Ok done that 

[amahle-TT]

Please reattach your faceplate back onto the master socket, please do let me know when you are done.

[amahle-TT]

We can see the line test still indicating an internal wiring issue after your equipment was disconnected, so this will need further investigation.

[amahle-TT]

Thank you.

[Sallyuk65]

Ok

[amahle-TT]

A line test is currently underway. This checks the equipment used to provide the broadband service to your home - including the exchange, cabinet and line equipment.

This can take up to 5 minutes to complete. I'll let you know if this test finds a fault, otherwise I'll continue with further checks.

[amahle-TT]

I am about to run a test that will look at the condition of your line. This test will identify any faults in the cables and associated equipment, between your home and the exchange, that could effect your service.

The result will allow us to determine if an engineer is required, or whether additional checks need to be completed with you.

[Sallyuk65]

Ok done that

[amahle-TT]

I'll now need you to remove the faceplate from your master socket.

[Sallyuk65]

No 

[amahle-TT]

Does the faceplate have screws on the front?