I can't buy Minecraft

So, I was going to buy Minecraft. I entered everything in correctly and hit enter all of a sudden a litl message thing shows up and it says ERROR: An unexpected error has occurred which prevented us from completing your purchase. Make sure no money was charged on your account and contact support at https://help.mojang.com/...mojang.com for further assistance… I don't know what to do next. I did not get charged but, I'm confused on what to do next. I live in the US and I know I have enough money to buy the game. There's nothing wrong with my banking account. Has this happened to anyone else?

Never happened to me. Try rebuying it in a few hours. They have been moving things around (they moved the skins database earlier) maybe that could be the problem? You should contact them anyway.