Paying a loan when arriving in the UAE and checking the immigration status

I am currently owing DU Mobile about 1700 AED, but I am outside the UAE.

I have received emails from them saying they will file a case against me if I don’t pay up. It has been over 8 months.

I want to pay when I arrive in the UAE in December but I am worried that there might be a police arrest, and I don’t want to go through that stress. What do I do?