Had exactly the same problem here.
My neighbour 3 doors away got around 75Mb, I got 25Mb on a good day, usually less, &
using DSL Checker gave basically same speed results before I went live.
We were on same cabinet & drops on same front pole, BTOR couldn't explain it other than poor quailty of cable.
After months of complaining, I got moved to another pole at rear of property & now have around 70Mb.
Edited by Nightglow (Fri 13-Nov-15 12:56:28)