Hi,
I'm at the end of my tether with this. I started work last year and my employers only put me on the payroll in month 4. Therefore I got a huge amount of salary in one go, but only one month's allowance for NI. If they had registered and paid me when I started work I would have paid far less.
They won't resubmit my earnings for the correct month (can they do this?) and HMRC say the calculations are correct. I'm down by about a week's wages (I'm a low earner and my husband has been out of work all year). I can't afford to write this off, but I'm not sure there's anything else I can do. Does anyone know anything about HMRC or payroll and can help? It's so frustrating that I can't get this money back through no fault of my own...