Not honoring appointments

We signed a contract with the adsl department on the 4th of january. Today the 6th of february after 3 appointments made and 3 frustrating calls to the call centre we were informed that they had no way of telling us when the service would be able to be installed. The tech never showed on any of the appointments wich i may add is between 8 am and 4pm wich required us to take a whole day from work to wait on them. What a waist of time and effort. Worst service ever.