Had a competitor in a small town try to stall for days and/or refuse to give us transfers on multiple occasions. After getting nowhere with the PIC diplomatically, I faxed them an excerpt from the state board and underlined the section saying transfer requests must be honored within x amount of business hours or be considered in violation.
I told them my corporate office instructed me to do this and they would be monitoring the situation, and please don't force me to have corporate call their DM as well as the state board the next time the regulation isn't followed. Never had a problem after that. I don't know if your state has the same regulations on transfers, however.