Uncommunicative customer service

I ordered a package through Cybercellar and they use Amarex as their courier service. My package was due on Tuesday and I made a note on my delivery instructions that they Call me before they intended to deliver as I work 5 minutes from where I live. Apparently on the 9th, Tuesday they were too busy to deliver my package. I kept track of my order online so Wednesday I saw that the order was out for delivery again, I called customer service to remind them that they need to call me before delivery. The agent said he'd make a note. On Wednesday I received no call and no delivery. On Thursday they tried calling at 7:30, unfortunately they did not leave a message or try to call me again. Apparently there was an attempted delivery at 6 but I was home and there was definitely nobody at my gate. On Friday I decided to stay home, I stayed indoors from 9ish in the morning to 7pm. I called them again at 12 to enquire about my package and a time of day to expect my delivery, they agent said she'd have the driver supervisor call me, still no call. By 2 I tried calling again and it felt like they were screening my call so I asked my husband to call they told him the same thing. Pathetic service