First, try to solve the problem with the administration of the company. Keep a written record of all contacts with management, plus details about the repair.
Have you tried sending the report electronically?
yes i tried
To submit electronically, download the available complaint report at the link above to your personal device. Attach and then email the full report as well as any supporting documents to protected email. Email the entire report, as well as any supporting documents to protected email. Please note that DMV staff will contact you by email.
And what do you recommend to avoid having to deal with an unreliable workshop?
Good Smart Shopping for Auto Repairs Can Help You Avoid Trouble With A Dirty Or Dishonest Repair Shop
and can i inspect my vehicle before paying?
of course You have the right to inspect your vehicle at the store before paying for repairs. However, this does not give you the right to remove the vehicle from the shop without paying for repairs, or to inspect it in areas where only authorized employees are allowed.
What if there is a violation of the regulations regarding the repair of the vehicle?
the 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 a lower fine. DMV cannot compel a store to pay restitution.
And how do I know that they are charging me just enough?