If it happened on this RCU market then we should move the thread to the market forum. Perhaps JWN can suggest a course of action or possible resolution.

I can suggest a few things if communication has been poor between buyer/seller. If it isn't too late file complaint thru Paypal or usps or however payment was sent.Also it is appropriate to give feedback in the RCU market if you both used the make/accept offer tools. Beyond that, you can file a formal complaint against the member which may or may not get results.

Hope it gets worked out , a month is long time to wait.