Ebay Seller welching on our deal..what to do?

[E-Revonut]

Prolly better threads to post this in but I had this in my subscribed threads

I sold my evx-2 on ebay recently, a potential bidder had asked if I would accept a Money Order, I told them yes but I wouldn't ship until it clears my bank. They won and they lied about when they sent the MO out, wound up taking 9 days for me to receive the MO. I deposited it the next day and have planned on waiting 5 business days for it to clear. They had asked for me to notify them when I received the MO and I did and I explained to them that I was unhappy with being lied to and it would need to clear before I shipped the esc. It has only been in my bank for 3 business days and they are giving me a hard time for not shipping it yet.

HAve I done something wrong? I have never dealt with money orders before and I will never accept them again! I figured 5-7 business days to clear just like a check, am I wrong?