Minecraft Java Edition + Bedrock Edition

I received a code that was already used. I have been trying to get this issue fixed for over an hour. Target will not refund my money. I now need to get Microsoft to refund, or give me a new code.

Purchased this for son, who is a gamer and is a permeant resident in a skilled nursing facility. Tried to down load it when a problem cropped up. Paid for the downloadable form of the game and when he went to download it, the company wanted money and a monthly payment for him to be able to play it. He is on a very fixed income (as we both are) and so he backed out of the process. Could not get a refund from Best Buy because it was a digital item and they do not refund for those. My suggestion for this issue. ----Make sure the purchaser is aware of the technicality of having to pay an on-going fee to be able to play the game. In not doing so, the purchaser loses the money paid for the game. I won't be purchasing another game from them.

I followed steps as indicated and have been all day trying to get this to function. It states after many attempts that the Minecraft 1.19 single player is a demo! Don't waste your hard earn money ordering through Wal-Mart! They give very little information and absolutely no help!