Is future safe in their hands???. Review on Kalrashukla Classes, Mumbai

I have joined the classes 2 yeras back for std 11 and 12 plus IIT JEE Advanced coaching. The fees is different for different courses. The course that I opt for has the fees of 300000Rs.At the beginning as I was new everything was good. The class infrastructure is very good fully air conditioning classrooms. I was in the Thane branch and I had a very bad experience The teachers there were frequently changing which was very difficult for us to set the tuning with the professor and to connect with the subject which led the students in my branch to ignore or letgo studies .The only professor was good was the chemistry professor and was unchanged throughout 2 years period. The other subjects like physics and maths were very difficult and as the students were unable to connect with the subjects it went very difficult for us. It was our fault also that we were not serious about the studies but as the connection was not made so how we can perform well. But not all branches are bad so think about it and then take a decision