Guys, how long it take for us to receive the tax money if we overpaid? My company paid first for me, and I claim back and Im entitled to get back RM500++..

I did it with my gf last month (24/3/2011) and she already received her 3 days ago. But I have yet to receive mine. But this is my first time since I just started working last year but she's been working for few years already. Could that be the case? Or should I check with LHDN? Any number that I can call?