O.C.G.A. § 48-8-57 (2019)

(a) The commissioner may require any dealer whom the commissioner finds, after notice and the opportunity for a hearing, to have been chronically delinquent or chronically in default under this article to execute and file with the commissioner a good and valid bond with a surety company authorized to do business in this state, or may require legal securities, in an amount of not less than $1,000.00 nor more than $10,000.00 as determined by the commissioner and in the manner deemed proper by the commissioner.

(b) The commissioner may sell any security deposited with him pursuant to this article at public auction if it is deemed necessary to do so in order to recover any tax or any amount required to be collected plus penalty and interest due. Notice of the sale may be served upon the delinquent dealer either in person or by mail or upon the person who deposited the security either in person or by mail. If the service is made by mail, it shall be in the manner prescribed for service of notice of assessment and shall be addressed to the person at his address as it appears in the records of the commissioner. If service is made other than by mail, notice of sale may be served personally by any duly authorized agent of the commissioner.