Slawomir Zajaczkowski

Good evening, I've requested a statement of my National Insurance Contributions some time ago. After that as a result of no response decided to sent registered letter to : HM Revenue and Customs BX9 1AN United Kingdom. There is no sign of any response, moreover tried to call ( from outside UK), a several HMRC numbers with no success at all. I completely understand that you've must been busy however it's trivial matter as I only need it to extend my annual holidays day allowance and that's it. Would you be able to at least double check what is the status of that matter and let me know via email- assigned to this and my NI number account either. Appreciate any possible prompt help and support. Regards. S.Z