Running with stolen DOT and company info.

A driver was stopped in MD while using my company DOT# and signs, he was put out of service due to many violations, he fled the weigh station and was caught again.
Racking up to almost 7000 in fines, shortly after I received a letter from the DOT letting me know the revocation of my DOT# due to us allowing our driver drive a vehicle in such bad conditions.
I already filed a dispute on the DOT website.
What else can I do?
I confronted the POS by the way and he said the wind had blown the signs that where on top of mine. (The truck he was driving used to run under us)

Would it help if I go to my local DOT office and explain it to them?
We are out of service and not making any money because this #######.

 

I didn't sell the truck, it was never mine.
The owner of the truck and I used to do business, but he was not authorized since 1/29/14 to use my signs anymore due to us inspecting his trucks and finding a crapload of issues with them.
We had two previous out of service, one time for HOS 70 hour rule violation and the other for mismatched chambers size in the same axle.
The HOS one he made a mistake on the logbook, it can happen to anybody, we all have brain farts from time to time.
The mismatched chambers I have no excuse for really.
It's our fault 100% for those two and it has been taken care of.
It sucks when you trust on somebody and they stab you in the back like this.