Removing blacklist in the UAE for old credit card case

Dear lawyers

I am from the Republic of Korea (Usually say South Korea). As my experience, I didn't have any difficulty and/or limitation for normal visiting and travelling to the UAE without particular visa till recent (Not for working).

But as I knew my name is still on the blacklist against the processing of working visa with a record of credit card fee payment delay even all payment had completed and closed that case. (I had worked as a chef during certain years a long time ago).

Can you delete my name from the blacklist for my potential working visa processing?

If possible, how much do I need to pay for lawyer fee and expected processing period?

Please let me know for my next follow up.

Thank you.

Regards

C. J.