need to talk

OK, I posted before about waiting and not feeling warm and fuzzy about our agency. Well, I have spoken to 2 people at the agency that will answer my questions but they do not always return my calls. This weekend was a potential visit weekend for a respite 9yr old because we are preadoptive. We finally called on Thursday to find out if he would be coming and asked if they could please call my work number. Our appointed cm has made no contact with us. The main cm did call and leave a message on our home answering machine. We recieved an updated emergency phone list from the agency and our appointed cm's name and number are not included on the list. The 9 yr old did not come maybe next weekend! We think something has happened with cm.Shouldn't they let us know if our cm has changed? What should we do? Does this happen alot?