Hello people

I live in Gilberdyke and use to have the old 3MBps service and got a good 3mbps all the time.
My parents (Dont live at home anymore so doing a bit of digging about while I am visiting) upgraded to the 8Mbps MAX service thing at £29.99.
Its terrible!!!
Download speeds, max are 38KB/s.
Im connected with the following;
ADSL Link Downstream Upstream
Connection Speed 1152 kbps 448 kbps
Line Attenuation 18.0 db 15.5 db
Noise Margin 24.8 db 17.0 db
Can anyone offer any help?
Router is a DG835GT connected via Cat5
My dad did ring KC once and they said we have line faults and would send an engineering, this was about 3-4 months ago!!