Zero Gravity Tree Stand Seats

Last year I got one of the brotherhood deluxe hanging tree stands made by Ameristep. Well needless to say this spring with all the storms a big limb fell from a tree and tore my seat up. The seat on that stand is the zero gravity material. I called Ameristep and they do not sell replacement seats. I hate to have to trash this stand but can not think of how to fix the seat. Does anyone know where I can find a replacement or should I just take to a seamstress and see if they can fix?

Thanks in Advance.

Why not send it back to Ameristep?

They wont take it back and couldn't tell me where to find a replacement seat...

my doc's recliner treestand has trampoline material
for a seat. it's more than strong enough to hold
my big butt.
just me, i wouldn't buy anything else from ameristep
and i'd send them a letter that says so, and that
you're gonna spread the word as much as you can
about the kind of customer service you got from them