Failed delivery because you don't know how to use an intercom

Why are you cancelling my delivery? I am getting very upset right now at the lack of service. I live behind the main house which means I cannot hear someone in the front. After the first failed delivery I requested that your team RING THE INTERCOM which is right on the gate. Alternatively they could call me. Neither one of these were done, how can you just cancel my delivery? Do you want me to sit outside on the pavement all day waiting for my delivery? This is absolutely ridiculous!