I have no idea what is going on - PIP

Hopefully someone can shed some light on my situation, because I am totally confuddled and after a phone call with a lovely lady from dfc today she was as much in the dark as I was!

I had a mandatory reconsideration letter on 22nd August allowing me enhanced mobility but 4 points daily living this was from 0 points on first assessment. This is also my first ever PIP claim.
I have had my back pay to when I first applied and have been paid since then.
Today I received a letter dated 4th October “We have all the information we need to process your claim”

I called dfc to ask what was going on and she opened my file and said the only thing she could see was that QAM requested something on 25th Sept?
I was supposed to get a call back from a CM today for them to explain but it didn’t happen. Now I am left worrying all weekend that they are going to go back on my reconsideration or something.

I did post a few weeks ago that I was 100% sure they had made the decision before reading my letter I sent in based on what they said. And the fact the reconsideration was made in 4 weeks, not 10 as I was told.

I also decided not to appeal the reconsideration because I was fully mentally and emotionally drained with stress and not sleeping which is a major trigger for my seizures. So now this.....is not helping!

Errr so yes....sorry for waffling, what the heck is QAM and why have they triggered this letter?

Thanks