Christy Kumar

Hi, I've been working part-time as an international student on a student visa and I'm not supposed to be taxed. I've been working since the end of September (2023) and I'm still being taxed for every payday. When I contacted HMRC to change my tax code, they said there's no employment history under my Name and NI number. HMRC said that can I contact my employer or HMRC itself could add the employment manually. If I should choose the latter what details who you need to add my employment manually?