You may not have your receipt, but you have your bank statement showing the transaction. Make a copy of that, black out the other info on the statement, and bring it with you to the
Walmart where you made the purchase. It might speed things up in terms of tracking down the info about your TV purchase. I agree that you won't find a TV of the same price to exchange for your broken one. Probably it was a black Friday special purchase by Walmart, of limited quantity.