Been there.
Best to receive airline points on a carrier where you do business, instead of WR points, if you don't use WR that often. (Same with Choice Hotels' program.) WR doesn't just zap your points to zero, they CLOSE your account totally, which IMHO is foolish.
If it just occurred, and you have a booking within the next week or two (even a mattress run), a phone call with a touch of shock and smidgen of indignation tempered with humility and the future booking won't hurt. ASK for the points reinstatement and "it won't happen again and I have a booking...". Note also points can expire after 4 years of non-redemption as well, I believe.
Next time, buy a pair of socks on Kohls.com, or a travel-something on Magellan.com, from
http://www.wyndhamrewards.com/earn/onlineshopping/ within the 18 months and it will also stay alive also.