No Delivery on Classes

For more than two years now, the Mind/Body Studio music system has worked intermittently. The Nia class is a movement class which depends heavily on the music and when the music system does not work, you cannot hold the class. This is a frequent occurrance. The management only arrives at the gym after 09h00 when classes are over and the peak time has come and gone. It is incredibly frustrating to drive to the gym in the morning rush hour to find that the class is not going to happen. I have reported it to management on several occassions with no result. Why should we put up with non-performance? <br>