as you said, your father had approached many agencies and found no solution.

Here is a slight positive thing for you, your father will be in all option will be called in the CID or a case would be filed by the bank. He can always asked for consideration to pay back by working. And he can work if he really wanted to. He can make compromise with the bank. The bad news is, he can't come home 'til he finished settling his loan as for sure, he already have a hold departure order here.

Your father may have pissed someone (with a "power" at the place of work) so this happened. He may go to jail but can make some arrangement with the authorities for him to get a job and pay back the loan. It's a matter of sincerity! Good morning!