If you paid with your purchase with a credit/debit card, you may be able to go back to the store and have them re-print the receipt. That worked for me once at BWW where I did not get the itemized receipt. Depending on what it is, you may be able to return the item and do the shop again. Or you can contact your scheduler or the help system with your MSC, and explain the situation and perhaps they will go ahead and take your report, but I doubt it. No receipt usually means no shop. Don't just blow it off if you want to build a good reputation with your MSC, offer to re-do it. It's happened to everyone here I imagine.
proudly shopping in the D.