Thanks for all the Paypal advice. The supplier made contact within hours of receiving my latest email mentioning raising a Paypal dispute and they have promised delivery.
I am not holding my breath, but fingers crossed.......
In the meantime, anyone considering using them just be aware that if you have a problem, contacting them is a nightmare.
They do have great products though - excellent range of tufts and static grass. Its a shame about their customer service.