HMRC are taxing me based on having two jobs but I only have one

I checked my PAYE details online and it shows that I am listed as being employed in two jobs. I left the first job that's listed in September 2023, and the second job I started in Jan 2024. It seems I have been paying too much tax between September 2023 and Jan 2024. How do get this changed and claim back the tax I've overpaid?

Hi James Morris,
You will need to contact HMRC to review your code and if overpaid an amended code can be issued to your current employer to make the repayment. 
Thank you.