Just spoke to my neighbouring farmer who was picking up his wrapped bales this evening. I told him your sorry tale and he said it's folk like that give farmers a bad name. He would wrap 6 times as an absolute minimum - and that's with 'soft' grass. nothing 'stemmy'.
Can you get anyone independent to look at it, maybe from NFU or trading standards? You could take it to the Small Claims Court (can be done online) but you will need good photographic evidence and probably an expert opinion on the work.
It is so hard when you move to an area and feel cut out