Unhappy with Invisalign, is there anyway I can reverse and go back to how my teeth were before?

follow all instructions and oral hygiene 
Continue with aligners as decided earlier
Don't get dodged by temporary pain or discomfort
All your effort will count in the end

do not worry about loosing of teeth . its common with any kind of orthodontic treatment. change in bite is also normal because right not u r on mid of treatment . chipping is not common for that visit yr dentist.

To answer your question.  If you just quit wearing them, your teeth will very likely go back to where they started in a matter of a few months.  But they you are just tossing your money and efforts down the toilet.  Loose teeth during ortho treatment is normal. Sometimes in orthodontic treatment small spaces are created first in order to make room to teeth.  If this is what your are seeing, it's OK.  But the chipping of the teeth is what concerns me.  I would definitely talk to your doctor and have him/her review the ClinCheck to see where it is coming from.  It could be a problem with the staging.  An experienced Invisalign orthodontist (specialist) will know what to do.  Perhaps a second opinion is in order.