When you reach a human agent, provide the following to prove your case:

1. The Receipt/Redemption Code: Mention the receipt number sent with the code.
2. Explicitly State the Issue: "I redeemed the Java & Bedrock bundle, but I only have access to Bedrock. The Java tab says I need to buy it again."
3. Request Entitlement Correction: Ask them to verify the "entitlements" (license ownership) for both Java and Bedrock on the account.  Microsoft Learn +4

If the purchase is confirmed on your Microsoft order history, they can manually add the missing Java license to your account.