Slow to pay

This company CHAMELEON CASTINGS withholds peoples money, 1 of my payments is long overdue for a shoot they sent me to and on many accounts I've been phoning being told that the owner/guy who does payments Jonathan is not in the office by the receptionist even when he is as I have people I know who work there I'm close with, I phone twice / three times in one week and Jonathan does not get back to me, I have another payment about to be due but it will lead to the same incident when that's how we make a living but they take food out of our mouths, Be careful guys you don't get exploited, as a parent you must understand my frastration with these people!!!