Ebay, craigslist, freecycle and such are where you try next. Please research that word I used if you don't know it.
i had an accident and damaged my mini receiver for my wave combo i contacted logitech uk they said they where out of stock then a few weeks later i tried again then i was told that they could not suply as the frequancy it worked on the could not send it i tried to purchace in states filled all on line forms it came destination it only had 50 statea and not out side this stopped from purchacing in us. they boiast a billion mouse sales bu spares out side us nil. george