"...I know the certificate of completion of a DUI program is one of the requirement to get the license back."
Actually the completion of a DUI program is not necessarily one of the license reissue requirements.
You only have to attend a DUI class that is appropriate for a conviction... since there was no conviction there cannot be a class requirement. You can take that to the bank... er, DMV!
There are times where a court might order an incorrect program, or fails to order any program. In those cases the DMV will decide the correct program and will require that that program be completed. But in your case the DMV has no information upon which to base a program requirement... thus they only have authority over the suspension period.
Did the DMV actually suspend your license because you were a minor with alcohol over.01 in your system? You might have completed your suspension. Check with DMV. You might be able to get your license right away.
Go to the DMV and request your license back. If they insist on a SR-22, get it from your insurance company. It should be free or only a nominal fee. Do not be concerned about them learning about your DUI from your request. If it happened over a year ago, they already know about it from your DMV record which they check annually.
Any comments offered are not intended as legal advice. This attorney does not know the specifics of the particular case sufficiently to offer legal advice. You should hire a lawyer who can evaluate the details of your specific situation before offering advice.
A roundup of the best tips and legal advice.