My son had his registration cancelled due to unpaid fines. He didn't find out until he was pulled over for it - now he has another fine. Service NSW tells me they don't have to notify you that they have cancelled your registration, but also that he should have got about 4 letters of intent to do so. He had one initial warning letter which listed a range of possible penalties for not paying. Is there any way out of this fine (has now paid previous fines)?