Ordering from Budgetpetmeds.com (also trading as Mypetdrugstore.com) is my WORST internet transaction EVER!

I placed an order with Budgetpetmeds.com (also trading as Mypetdrugstore.com) on June 15 2009 for PROGRAM for Dogs, PROGRAM for cats, and INTERCEPTOR for dogs. I emailed them a scanned copy of the prescription for INTERCEPTOR from my vet (after checking that they could accept it in that way.) Later on the 15th, I received an order acknowledgment and the $180.22 charge, and that there would be no shipping charges because the order was over $100. On June 16 2009, I received an email informing me that my order had shipped using USPS 2-3 day Priority Mail; a link was provided that took me to my order on their site which was also marked as "shipped". No tracking information was provided, either in the email or on the website, despite the statement on their site that, " ... Here at BudgetPetMeds we pride ourselves on prompt and efficient service to keep our customers 100% satisfied. All orders are shipped within 24 hours and you can track your shipment..."
After 2 follow-up emails asking where my order was, I received an email from "April" on June 25 saying, "Your order was shipped out to you on 06/16/2009 and you should have definitely received it by now. We will contact the postal service and see if they can locate this package..." I replied immediately asking again for a Tracking Number, Priority Mail Mailing Receipt Number, or even a zipcode for where it was mailed.
It is now 16 days since "it was shipped", and I have not heard anything. Today (July 2) I called Mypetdrugstore.com (the name that appeared on my charge statement), 877-711-7387, and the person who answered told me that I would receive an email within 15 minutes from the warehouse with information about my shipment. After several hours and no email, I called my bank to begin a dispute claim on the Visa Card charge.
I have never experienced this level of total indifference with an online transaction. I regret not looking up the reviews for this company before I placed my order, but because they trade under different names, I didn't see it until after it was on my statement.
BEWARE! DO NOT BUY FROM Budgetpetmeds.com or Mypetdrugstore.com!