DMV will take action against the store. This may include suspending or revoking the store registration and / or imposing fines. If you suffer a financial loss due to a surcharge or unnecessary or poor quality repairs, the administrative law judge presiding over the hearing may offer the store the option to pay restitution. The store may receive a shorter suspension period and / or or a lower fine. DMV cannot compel a store to pay restitution.
About complaints against a DMV regulated auto company, what type of complaints would be considered a lemon law complaint?
You can look up lemon law complaints, and see if you should file.
Do you also know about this the Repair Shop Act Works. and that the law of repair shops works?