Lisa I had exacttly this a couple of weeks ago. ( @Folksyadmin Duplicated order )
In my case it looked as if husband and wife had tried to do the order at the same time, I assume because one tried and failed initially.
Exactly the same though.
The tricky bit was refunding the full payment for the second as Paypal wanted to give me part of it as my fee refund. I had to give them all one payment and refund the rest from the other.
