insincere apologies

I really dislike being treated like the difficult customer after I've been patient and friendly. Holding the line again and again after 4 people told me they'll phone me back to let me know what happened to my delivery which was booked for yesterday morning. ( I thought booking a time slot was to ensure that someone will be there to receive it? Now I'm told mine was rescheduled without anyone bothering to tell me?) Then when someone does actually find out what's going on and phone me back, he is irritated because I complain about the lack of communication on your part and afterall, the delivery is just late and what? it doesn't look like it's important to be on time anyway? This whole mess really makes me wonder why I recommend you to people. And btw, I've been a loyal online customer since 2013. Good to know how much you actually value your customers.