I remember a few years ago I put an order in with Tower for about $200. I got a $20 rebate for this.
Now they send me a wrong part ($50 fuselage). So I contacted them, they would get me a return label and send out the
right one after receiving the other one.
So I asked if they can send it out right away, I'd pay for it and get reimbursed when they received the one I was going to send back.
No problem, didn't have to pay for shipping and it arrived quickly.
The surprise happened when they only give me $30 back. They deducted $20 as my order now would not qualify for the rebate anymore....
When I ordered the right part, it was considered a new order.
I'd still had qualified for a $10 rebate, but that didn't seem to matter.
Still - Tower has a very good customer service. You will find occasional slip ups anywhere.