Hair on the face can be stubborn and take a few more treatments than other body parts. I would suggest having a consultation so that the provider can look at the area of interest and better inform you.
After 9 treatments the hair should be gone or only a few stragglers left. Possible reasons for treatment failure would include white or very light hair, outdated laser equiptment, plucking or waxing in between sessions among others. Make an appointment with your doctor who is overseeing your LHR - and find out why.