I knew a German who spent a month in the immigration jail in BKK several years ago. Very crowded, filthy, HOT. Sleep on the bare floor, no bathing facilities, food inedible, you need a debit card (no cash permitted in jail) so you can order outside food. He had a cellmate from Africa who had been in there 18 years!! since he had no money for a first class ticket back to Cameroon. A russian had been here 12 years, another German 8 years. All awaiting deportation but without funds. Yes, embassy can visit, but pointless. You could be stuck there forever with no set release date.