hi.
next time don't pay any deposit. if near just set appointment and meet. check and make everything clear on the spot and pay. on mudah so many scammers and don't have any reliable seller rating. better use ebay malaysia. there are many top rated seller on ebay.

my friend got cheated a few years ago. using mudah.my to sell mini hp for rm700. they met and that 'buyer' took the laptop but did not pay any cents. promised to pay the next day bla..bla..bla..

as for u, try to push him a lil bit. if no actions taken, then pasrah la.. you've learned your lesson.