Letter of Consent Required for NJ CDL permit

Looking for some help/advice:

I recently completed the required written testing for my class b CDL w/ air brakes in the state of NJ. When I attempted to have my permit stamped as ok, I was told by the NJ DMV that there was some type of hold on my license, and that I needed a letter of consent from Rhode Island DMV (received a few tickets/summons for speeding, reckless, etc., over a decade ago.) I went to court at the time and paid all necessary fees/fines. However, I've been trying to get in touch with the Rhode Island DMV for two weeks to see what they need from me to get the above mentioned letter, but cannot get anyone to answer the phone, return a call, nor reply to a fax. Any suggestions as to what a) I need to provide them with, b) any means of getting in touch with them to provide same? Need the CDL permit for volunteer FD, as well as work, ASAP. If anyone ran into similar trouble and found a successful route, please let me know. Thanks.