Bad recruitment service

I wrote and passed all the assessments on the 5th of July and was told to wait for an interview but to this date no one called.I tried to make a follow up I even wrote to them on Facebook but the people who get back to me are not helpful. Today one of the hr personnel hang up the phone on me,why don't they just tell me if my application has a problem or was rejected. This is bad you should not call us for assessments just for fun we need jobs and your playing with our hopes.