Sir I was working in one company they were issued...

Sir I was working in one company they were issued visiting visa for 3 month to me and they was gave me only offer letter and promise me for employment visa after 3 month they're give me march month salary and may 2020 but give me April , June and July 2020 salary when I was asked about salary then he told me u r not more in job , my job profile in this company as sales person during these working tenure I sold some company products on credit basis when I said to boss about my salary he told me collect all money from supplier then I will issue ur salary , I felt they're not ready to pay me I was collected 9000 AED from supplier and put in my pocket and I reported to my boss for same amount consider in my settlement amount but my boss contact to police and police today took my passport I explained to police they're not give me salary and my commission so thst I do this Sir give advise how I get my passport ..?