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
You don't need blockchain.info to confirm that the money was "returned" to him. All Bitcoin transactions are public, so you can simply check his address(es) yourself and see if he indeed has the 0.75 back. Anyways, if you don't have the Bitcoin, then he does, that is simply how Bitcoin works. Bitcoin cannot simply disappear.
If you do contact Blockchain.info's support, I highly doubt you will get a useful answer.