Correct the memo's don't require the @ just like sending steem to someone doesn't require it, though I think this is a good idea. The problem here is we make 10% on these orders, to refund you because you made a mistake would cost us the revenue from 10 orders of the same size and 100 of our smaller orders. I am happy to work with you on this, but you'll need to give some ground, because the instructions on how to you use the service are clear and we have not intentionally or unintentionally ripped anyone off here. You just didn't follow the instructions.
If your order wasn't filled we would have refuneded it no questions - but someone did delegate to the account @for and @for did receive a notification saying it was successful. You are out 50 Steem, a delegator is out 2500 SP and we are down on time and PR. Lets try and find a solution which minimizes loss to all parties. Are you available on discord? As resolving there would be a little easier than back and forth on the blockchain.
Hope we can find a solution.
maybe the silver lining to this is creating an error free process for the future, left a message for you on chat.
Cool I will log on to .chat now and we will sort this out. Bear with me.