Help with revoked license, please?

I on May 1st I received a ticket in North Carolina for Driving 79 in a 55 and wreckless driving. My court date was set for July 1st.

When I received the ticket I held a North Carolina drivers license. But on June 25th, I moved to Arkansas, therefore, my North Carolina license was surrendered to Arkansas, and they issued me an Arkansas license.

I went back to North Carolina on July 1st for court. I told the Judge that I no longer was a resident of NC and had switched my license or Arkansas and that I would not plead guilty to 79 in a 55 or wreckless driving, but I would plead guilty to 74 in a 55. It was accepted and the court gave me a $145 fine. I drive home. I failed to pay the fine, now I have a bench warrant.

2 weeks later I go back to North Carolina to get some more belongs of mine. I was pulled over and the cop said I was driving on a revoked license, that the license was revoked on July 11th by the DMV. He gives me a ticket even though I have a valid Arkansas license, but lets me go. Court date set for September 30th. I failed to show, now I have another bench warrant. (its a 1900 mile round trip)

Was NC DMV required to notify me of the revocation since I was not found guilty of going over 15mph in a 55mph zone?
(with the court and dmv knowing I moved out of state)

Since I switched my license Arkansas, (that means I no longer have a North Carolina license and its illegal to have 2 drivers licenses in two states?) can NC revoke a license that no longer exist?

Since the DMV's Civil Penalty exceeded the Criminal Courts punishment, does that make the civil penalty a punishment in principal, constituting double jeopardy?

Anyone have any pointers for me?