Unprofessiona6 l service

Two weeks ago I made an appointment with the company to come and fix my alarm system because it triggers to them and not at our house I asked that the technician must come at 0900 today and we were called by the company today to ask if we were okay since the alarm triggered and I told them that it didn't trigger here and I reminded them that the technician should arrive at 0900 as arranged until now no technician has arrived I called and spoke to 5 agents who kept me on hold and then they dropped the call until I call again and demanded to speak to the supervisor and I spoke to Maria who later called after talking to the technician that he will arrive at 1100 and I am so angry that they didn't keep to the time we booked 0900 because we have other things to do now we are to do the final arrangement for the funeral tomorrow and I am stuck waiting for the technician