Delivery Failed (Was there even an attempt?)

I was expecting a delivery today from FNB via Digital Planet (using RAM Couriers) between 9am and 5pm. I called in at 2pm to make sure I had not missed the delivery and was told it was still out for delivery. I had a bad feeling so I repeated the call again just before 4pm. I was then told Delivery had failed. I had no phone calls, the person receiving the package had no phone calls, and needless to say, there was no delivery. The gate didn't call either, so they didn't interact with the gate at all. I have been told drivers usually don't go back and am now waiting on a call back with regards to why delivery failed (I am very curious as the reason seeing as no one was contacted about it) and maybe a solution.

That being said, Mbali in the call centre tried to help me by getting in contact with the couriers themselves and saying she will get back to me. She was very professional.