It is difficult to know exactly why you have residual banding in your neck following your procedure without looking at the operative report. An exam would be very helpful as well. I would follow up with your surgeon and find out what options you have for a better result.
Without knowing exactly what your surgeon did and an in person exam, it is hard to make a recommendation. In some cases, face and neck massages help. See your surgeon for his recommendation. You may need a revision.