Alternatively you may reduce the amount of storage you are using. Visit https://mega.nz/#fm/account to see a breakdown of your usage. Please note your rubbish counts toward your usage, and may need to be cleared to free up space.
In 30 days time, if the account remains over your allowed disk space allocation then MEGA will attempt to clear your rubbish bin automatically to try to fix the problem.
If you need any further information, please contact our support team.