What should I do if my motorbike's green book has a misspelling after a year of hassle in Thailand?

Definitely an "everything else" item. Maybe save purely speculative answers, wondering if anyone has actually dealt with a problem like this. Bought a motorbike in Patong from a dealership. There was a literal year of drama and hassle to get the green book (just them not having their shit together and then my situation turned complicated and they still did not have shit together) and the green book finally arrived and my name is misspelled.

I guess I'll start with contacting them, but I live on the opposite side of the country now and it was a painful year trying to get them to deal with it the first time... Next maybe go into the transpo office here and beg for mercy?