Regarding the issues recently with Mojang and PayPal, we've heard this back from them:
The Mojang Team is aware of the problem and working to refund money to
everyone who purchased through PayPal, but didn't receive the game. Refunds
will begin in the next 24 hours. We will be emailing people through their
PayPal email address to let them know their payment is being refunded.
We, at Mojang, are really sorry for this issue and are working to remedy the
situation through refunds.
We'll keep this updated if we hear anything else regarding the matter. In the meantime, please try to refrain from making posts on this subject, as it's a known issue on Mojang's end and we've already relayed as much information as possible back to them. Thank you.
edit 1: Everyone that has experienced this issue recently should start seeing their refunds coming through. For the time being, please wait on trying to repurchase the game until the issues have been resolved, at which time we'll update everyone on the matter.
We'll keep this updated if we hear anything else regarding the matter. In the meantime, please try to refrain from making posts on this subject, as it's a known issue on Mojang's end and we've already relayed as much information as possible back to them. Thank you.
edit 1: Everyone that has experienced this issue recently should start seeing their refunds coming through. For the time being, please wait on trying to repurchase the game until the issues have been resolved, at which time we'll update everyone on the matter.