Mailchimp Database Cleanup & Account Unblocking

My Mailchimp user accounts frequently get blocked due to issues with my contact database. I need a Mailchimp specialist who can unblock my user accounts, clean up and set up a healthy database in Mailchimp to prevent this from happening in the future.

Specifically, I am dealing with:
- High bounce rates
- Spam complaints
- Invalid email addresses

Your responsibilities would include:
- Unblocking user accounts
- Cleaning Mailchimp database and removing problematic contacts
- Implementing measures to maintain a healthy database

Ideal candidates for this project should have:
- Extensive experience with Mailchimp
- Proven track record of database management
- Expertise in identifying and resolving issues causing account blocks.