Kohl's rebates and receipt?

[sherry7]

I'm hoping someone here will have some insight on this. On Kohl's black Friday sale, I bought several items (online) that have a mail in rebate. I printed out the rebate forms recently, and each one says that I need to have the "original receipt". Since I bought this stuff online, there was only one packing slip (receipt) in the box. I can print out my order confirmation online, but the employees at the actual Kohl's brick and mortar store always tell me that's not a real receipt when I try to return things with it.

Any idea of what "original receipt" I send in for these multiple rebates? Thanks.