This is a long shot but thought I'd post here.
So back in 2018 me and my sons dad split up for 7 months and I was getting child tax credit , when I got a statement asking if I still wanted to claim but me and my sons dad spoke about getting back together so I never bothered filling in the form as I thought I'd I don't re-apply then I won't get anything which I never since not re-applying. I end up getting a phone call saying I owed the government everything back that I was entitled to as o was suppose to send the letter back ticking that I didn't want to claim anymore which wasn't explained on the letter that it had to be done.
I've just came across a letter from a few months ago saying that's it just been paid off. I feel angry at this as it was money I was entitled to and feel like I want to speak to someone about it to try claim back but don't know how to go about It. Has anyone had this or similar situations to this before ?