I left my old job on Friday 9th August. They made it clear to me I wasn't wanted.
They paid me a full month on the 23rd and I queried this by emailing them. Somebody from payroll said they'd get back to me.
A letter arrived stating they had overpaid me by £700 and they insisted the full amount is paid in full immediately. If I didn't respond to the letter, it would be referred to their solicitor.
However, I haven't received my P45 yet (I left three weeks ago) and I haven't had confirmation of my correct final wage.
I understand I will have to pay something back, but I'm owed holiday pay and the figure won't be £700.
How should I approach this? I've no problem paying them the money because it isn't mine, but I've no P45 or a correct figure for a final monthly wage.
Overall, the company has treated me shabbily throughout my time there. I'm inclined pay them something like £10 a month because of how the letter was worded.
I'm in the UK. Can somebody offer any advice on how best to approach and resolve this?