How do I take back my credits from Alex Hue？

My name is Derek Chang. I am not living in USA. I post this thread for my credits. I try to use the shortest word to explain this process.

I have did business with Alex Hue on last year.
http://www.alexhuereptiles.com/index.html

We have a good business relationship before last September. Since the cites took so long, I stop placing my order. On last November, I received the last shipment for Alex Hue, but lack of some snakes.

On Nov. 2008, I asked Alex and wanted to know how much credits I have. He didn't tell me until Jan. 2009.

On Jan. 23th, Alex said my credits is 2150.00. I told Alex I want to use this credits to buy his ball pythons. He didn't give me a reply and disappeared on Jan.

On Feb. 17th, I saw an AHR's ad on KS.com, I sent an email to AHR and received a reply from Alex's wife(Heather). She told me:
Alex is not available, he has some personal and family
matters he is attending too.
so I started to communicate with Heather.

On March 6th, I told Heather my credits has been delayed over 4 months. I want to take back my credits. She said my credits only $1245, but didn't give me the details.

On April 13th, Heather sent me a proposition. She wanted me to buy more snakes($19500). I refused it. I told het I want to take back my credits and finished this business.
But she never reply me after April 13th.

I sent her many emails, no reply. I try to send message by AHR's forum, my ID was locked, I can send any meaasge to other member except Alex. But Alex never replied me after Jan 13th.

In this time period(Dec.2008~Apr.2009), I only received 14 emails and 4 messages from Alex and Heather. so many excuses, I felt tired.

In fact, I waited my credits over six months. I don't want to wait more. If you know how to contact Alex or his wife, please tell them, give me a peply. If you have any suggestions, please let me know. I appreciated it. Thanks for your reading.

Derek