If the account appears as blocked, follow the instructions provided through this link. https://support.microsoft.com/account-billing/account-has-been-locked-805e8b0d-4141-29b2-7b65-df6ff6c9ce27
If the problem persists, use the reinstatement form, which is different from the recovery form. https://www.microsoft.com/concern/AccountReinstatement?SilentAuth=1&wa=wsignin1.0