Unpaid invoices

HJ Welding and General Repairs did work on the farm in Hoedspruit. Because the farming equipment is in a bad condition. The manager of the farm ask us to help repairing some of the tractors on the farm so that he can do his daily word with the tractors which was always broken. We did the work and submit the invoices for repairs. COD Inv 100418 and inv 100420 was submitted 06/05/2022. Up to date no payment was received. Lots of stories, 1st we not on their vendor list, then no one want to take responsibility in Babsfontein for the inv. Keep sending us back to Hoedspruit, Hoedspruit doesn't do payments only Babsfontein Suritha. Surita told us that only Dawid V Zyl decide who and when gets payment. We also are an small businesses who needs to pay employees. Travelling was done 110km to the farm in Hoedspruit accomodation was paid to overnight to complete the job. They also ask for discount on the invoices which I have gave to them. Up till now no corrospondance from Andrew Store or Dawid van Zyl or Suritha in accounts department. This farm bragging being suppliers of Woolworths. Do you get discount at Checkers of Pick a Pay when buying milk and bread?