Company submitting someone else info to hmrc as mine

[LottieMary]

Bit of a weird one - my company is consistently mixing up me and another colleague. Financial reports to HMRC and pension company have mixed up, duplicated, replaced. All kinds of combinations - it’s a mess.

what are my options? It’s been months and they don’t seem able to get this right

It’s obviously not ok. How big is the business?
Flag to someone more senior in finance than payroll. Can you use a different form of your legal name if there is 2 Jane Smiths for example

Raise this with your Data Protection Officer - it’s a breach of GDPR. They need to be accurate with personal data.