Is there anyway I can get Blockchain to confirm this?
No, Blockchain.info is just a service. They are not the Bitcoin blockchain nor do they have any power over Bitcoin. Confirmations come from miners and those miners are the only ones who decide whether your transaction goes into the blockchain or not.
What about if they use his account balance history to determine?
To determine what? That he sent the Bitcoin? Sure they might have it in their logs, but nothing can be done about it. For all intents and purposes, the transaction never happened and the entire Bitcoin network doesn't know that such a transaction existed.
If they can confirm it, then i can go back to him and say, blockchain says you got the money back, if not im going to have to eat the .75
If your friend
can not send the
Transaction ID to prove that he sent it to you,
then your friend needs to send it to you again.
That is all there is to it.
Your friend didn't send you anything,
that is a fact.The fact that the 0.75 btc is
not in the address that you requested payment into,
is
all the proof you need that he did not pay you or it was returned to him.
Please request the
Transaction ID from your friend.
If you do not do so, then you are a troll and wasting everyone's time, including yourself.
Request the Transaction ID or GTFO.