What should I do now after experiencing eleven months of numbness in my left cheek, lip, and nostril after a Juvederm injection?

An injection of Juvederm caused extreme bruising and numbness in my left infraorbital nerve. The numbness persists after 11 months. They physician sent me for ultrasound therapy. Only the sensation of temperature has returned to the left cheek. Fullness is still evident in the left cheek. Will this heal? What are my options at this point? What steps should I take?