Not satisfied with the result of my Invisalign. What should I do?

I almost have done with my treatment 49/66, and I go to the dentist regularly and everytime doctor says it went well. But the bottom teeth are not aligned well and even worse. I need to leave the place after graduation, but I am not satisfied with the treatment, the doctor wants me to pay the rest of payment without correction what should I do? Should I keep the original plan or just now wear them?