Rent a student hideous treatment.

I’m extremely upset with our treatment from this company. Especially the most unreliable person, John Ashgrove, who has continued to let us down by not paying our due petrol reimbur*****ts and underpaying other students for hard work. I have written proof of John promising to give us what we are due but come today, the day he promised he would pay, coincidentally his contact details are all disconnected. I have even contacted the client (which rent a student advised against) and they have mentioned that they will not conduct business with rent a student again. This treatment is hideous and they owe us about R2000 which we probably will never see. I don’t know what to do.