Sorry if this has been asked before, but I'm new here

If a person pays for bitcoins though zipzap and the transaction is listed on bitcoin as a transaction , but no bitcoins have been recieved. That means there is a delay with delivery of the bitcoin at the bitcoin end right?
At what price does the buyer get their bitcoins? The price at the time when they submitted the order, or the time when they actually arrive?
Order price is locked in at time of purchase.
Give me some order info and I will see what type of issue you have. Some experience delay as our support logs are backed up.
Hi URSAY,
I'm happy to hear you reiterate the terms of purchase, because I received a somewhat disheartening response from the bitinstant support folks today. I might be reading it incorrectly, so I'll let you interpret it for me. Here it is:
Hello Wufoo,
We try to get as close to preev.com as possible. Keep in mind, however, that the price of bitcoin fluctuates wildly between the time you create your order, the time you make your purchase, the time we purchase bitcoins at the exchanges on your behalf, and the time you receive your bitcoins.
Due to massive DDoS attacks coupled with skyrocketing interest in Bitcoin, the exchanges have been overburdened resulting in massive delays and even the inability to deposit or transfer funds.
Thank you for your understanding.
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Sincerely,
xxxxxI believe the CS representative is saying that they are not honoring the time of deposit, but am I misunderstnading them? Am I just being told to keep waiting, and that they are still coming? Please provide some clarification for me.
Regards