idlc in Vaughan

I was getting a new alarm system put in by a technician from the company and was called with a different day than was previously mutually agreed upon . Rescheduled the appointment with the company and was given a time frame for a different day (10-2). Time came and gone without the technician not showing up or calling me and i having to call the company in regards to the unprofessional behaviour of not calling me about being late. Company informs me that he will be late due to an emergency but i told them that it is not professional to not inform the client and having to wait around without knowing.