Working on a visit visa and paying to issue employment visa

Dear Madam,

I am in a company in Fujaira, but the company didn't sign any agreement with me. I asked them but there wasn't any tangible answer. They did not even give me any letter that implicates that I am working in the company.

I worked with the company two months after two months for my tourist visa to expire. They informed me that I am going to pay for the visa, now every month my salary is cut.

My question is, I want to leave the company because the work is hard for my system and the salary is not helping me. So, madam, I need your help what should I do to cancel from the company?