Immigration travel ban

In 2019 I moved to Dubai with my little 4yr old daughter. We came on visit visa in Feb 2019. In March 2019 I started working as a Procurement Manager at [company removed]. They provided me with a residency visa. May 2019 they terminated my contract and cancelled my visa. I then started working for [company removed] in JLT in June 2019. I was told that they are in the process of doing my visa. I worked a few months, no visa was applied for and they terminated my contract. At this time I lived in a rented apartment. I was terminated without payment. My cheques bounced of which I had to pay fines at the police station. I had to move to a different apartment where the same thing happened and I was left in the dark. They switched off the electricity, kept my furniture and belongings and told me to leave the apartment. By this time I was in overstay. By the time I could sort out the rental case of the first apartment, I had to leave the country and took an outpass because I couldn't pay the amount of the fine (about 4000 AED). A year or so later I called and asked someone to check if I still had a ban so that I could pay the fine, but I was told there is nothing on the immigration system and I was clear. I did this for a few years in a row and was told the same thing. So this year I am in a much better position than before and want to travel with my kids to Dubai — I booked flights for 20 April. I applied for visas and they got rejected due to previous ban. I am now told it's the overstay fine. How can I get this sorted ASAP before I am due to travel as I need to reapply for visas?