Very recently closed account / lost number

Hello and sorry for bothering you,

I made a mistake and thought I still had some of the 40 days left to keep my account open. I realised a couple of days later after it was closed that I was wrong. Because not much time has passed, I was hoping that I could keep my old number at least. I'm under the impression that numbers aren't immediately "recycled" to be ready to be given to someone else. Is there a fix for this, for example via PAC? I still see my number on my accounts page. I have already used the "message us" function twice (one was out of hours).

I have made a mistake and I will be more careful in the future. I don't approve of making a habit of being careless because time and effort usually ends up being needed to deal with the consequences.

I will say that I only got one text and one email about this and a specific date wasn't mentioned. I would have been less likely to f up if I got better reminders. I am primarily at fault though.