Technical DPF blocking question

[Memyself1]

Hi there, I'm looking for some advice please
Hopefully somebody could possibly shed some light for me.
If a blocked dpf was fully cleaned professionally, and there are no other issues with the car, how quickly could it become 86% clogged again?
I've paid a great deal of money to get dpf fully cleaned (it took a few hours) at a specialist centre. The light was off and it seemed good for a week, but then the light came back on with the same code.
My feeling is that they only partially cleaned it, but I am not an expert.
The specialist centre are having none of it, insisting it was fully cleaned, I had to take it elsewhere to get the dpf clogged percentage reading.

So is it plausible that it could become so clogged within a week, with no other problems that we know of?
Thanks for the advice, things are getting a bit heated

 

[Memyself1]

I should add, the dpf was removed to be cleaned, at a garage that says they have specialist dpf cleaning machine.
Also the other garage attempted a forced regen which wouldn't work as the revs kept dropping when the em light came back on.