36 hours without going solo? I just completed mine 2 weeks ago on 12 with a 5 yr break in between.
Sounds like you need to put your foot down and get some answers you're the paying customer. The main problem here is that you mention that you have a set of instructors, my best advice is stick to one for the rest of your training. With a group of them there's obviously been a breakdown in communication and structure to your lessons. Between them they are most likely unaware of whose done what and when and how far you are. This mess is only going to cost you more so its vital you start taking some control.
All the best. Tim