Firstly I would like to thank the community of CAG as it has got us out of a mess a few times.
Currently; we are dealing (or in our case - not co-operating) with Scotcall.
On all their letters they put only a 0844 number, their non-0844 number is: 0141 248 7400.
It won't let you do 141 in front but I called and made sure that I said I didn't want correspondence from them except in writing.
I did of course deny any knowledge of the debt and demanded a copy of the original CCA (which I doubt that they have.
Wescott (The original DCA offered a 50% discount on the debt on the second letter which tells me there is a good chance of them not having the full paperwork.
Just though this may help people dealing with these.
Michelle