Precedent Insulated Panels

precedent panel system asked our company to provide an express overnight service by team leader on site. we performed a miracle sourcing materials on a friday afternoon. called in a sheetmetal worker to cut and fold urgently needed bracketing. delivered to site saturday before lunch.invoice sentfor 4 months this company would not reply to phone calls, messages on their mobiles and emails sent from our office.after 4 months they decided to reply with an offer to pay what they felt like paying with no regards for the extra effort on a friday afternoon, procuring metal, special rush trip to pick up metal from supplier, calling in manpower to do the job on a saturday morning and then delivery to a building site on a Saturday.please be very cautious with dealing with this mob.