Upgrade capacity for personal contacts upload Merged

I have 18,000 contacts in my customer list but RingCentral personal contacts only allows 10,000 contacts in the database, and only allows around 2,000 contacts to be uploaded at a time. It would be a great feature for my business if you can expand the capacity of Personal Contacts to allow me to upload at least up to 30,000 contacts and to do so all at once instead of 2,000 at a time.