Logging In Randomly Chooses Two Accounts

Lately I've been trying to claim my copy of Minecraft Bedrock edition for owning Java since 2009 but everything on the Minecraft site redirects me to the Mojang one and the Mojang site keeps redirecting me to the Minecraft one and I can't even access my accounts properly (Microsoft and Minecraft) since they both use the same email.
All I want to do it combine the accounts together and obtain my copy of Minecraft Bedrock edition.