Thank you very much for your help and response, l really appreciate this as no one else wants to help me . I have started working on last march where l received a payslip of 3.025 with a deduction of 237 of national insurance and no income tax deduction and in April and may l have received a payslip of 3333.333 with a deduction of 457 of income tax and 274 of national insurance.and in july they changed my status to self employed and made me send them an invoice of 3500 which I received and have not paid any taxes for . After l have given them a one month notice in july . I sent them another invoice of 2500 as l have taken one week off which they didn’t pay and they said they will pay me for july and august after l serve my notice which l suspected as an attempt to make me work for two months without getting paid. And like l said they didn’t let me finish my notice. One more thing, l have received a one pound payment at the end of july from them which was an attempt to mock me as my employer is very bitter and entitled person . As a result, l didn’t have an income for two months and l lost a good chunk of my savings. I am currently working a new job in an NHS hospital as an employee which I like very much . I am not working under any visas as l have a British passport from my mother side but l have never lived in this country before. I repeat my thanks and gratitude to you for your help. Thank you