I don't understand, if you've already had this course of treatment and paid all this money, then why is the hair still coming back?
People say shaving doesn't make hairs grow back coarser, but evidently it does. I usually epilate and I know if for some reason I have to shave, then the regrowth is thicker and coarser, than if I was or epilate.
Maybe you shouldn't have kept shaving after your treatments, as perhaps it's encouraged the hairs to become thick again. I thought after a few laser tratments the roots weaken and eventually the hairs stop growing for a time?
You have to consider if the treatment is working and effective. If it's not, then it's probably unwise to keep investing in it.