Slow speeds

[#1]

My original estimate for my fibre was 9mb, it's been getting slower and slower since I got it. It's now down to 4mb. I was wondering if any of the plusnet people on here can check my line for faults because this isn't really good enough for me. Is that possible?
Thanks

[#2]

BTW I did the speedtest.
https://imgur.com/a/jOw5t
It's broken, it doesn't do anything.
The other one does though.

[#3]

[quote=Test Results]
Sync Status In Sync
Downstream Speed 6.3 Mbps
Upstream Speed 1.0 Mbps
Voice Line Test Result Voice fault suspected - contact Voice CP to progress copper issue
Profile Name 0.128M-80M Downstream, Interleaving Low - 0.128M-20M Upstream, Error Protection Off
So I tested the phone line:
[quote=Phone Test Results]
Test Result: Fail - Fault located in local network
Description: FAULT - Battery Contact

I've reported the fault and added a ticket to your account.