It might be dishonest, it might not.

Certainly it is good where the update feedback happens because the database had a genuine error - and the "live" line characteristics represent a perfectly reasonable line.

Obviously not so good if the feedback results in an estimate based on actual statistics of a faulty line.

In this case there seems to be some strange interplay between the two neighbours. Perhaps the pairs aren't twisted.

OR engineer back next door for about 90mins again today as their speed had dropped to 19Mb, eventually the engineer told him his tests were now showing around 40Mb. After he left he ran a Speedtest,net test and big surprise, it's down to 19Mb again, luckily mine is still hanging in at 43Mb.

Makes we feel almost fortunate to have only lost 10Mb (72 to 62) in 2 years.

TheFunkySpy,

You are lucky, I have lost 10Mb+ in less than 8 months.

I also have been through the 'lets change the estimates so your sync speed is acceptable'.

What options do I have to chase this when the estimates are being changed ?

I had an original estimate of 72Mb and got 78Mb consistently. (Aug 2014)
Roughly 6 weeks ago the speed dropped and did not recover.
DLM bounced the line up then down to 60Mb and dropping..
Engineer came out and fixed a HR fault and got 68Mb (although he said the line tested at 78Mb !!!)
Still not recovered back to 78Mb
Two days ago G.INP has kicked on the line and I get 65Mb (!!!) and estimates are now 'changed to fit'.

What are the chances of getting a pair change on the line ?