Very disappointed with this courier service

Very disappointed with this courier service. I sent a parcel on Wednesday morning containing baby formula, nappies, and food, and I was promised delivery by Friday. Tracking showed the parcel went out for delivery at 07:14 this morning from a depot close to the delivery area, but even by 17:00 it was still not delivered. After contacting FlexStop, Janine advised me that the driver had too many deliveries to complete mine. How does a parcel stay on a delivery vehicle the entire day without being delivered, especially when it contains essential baby items? Now I’m being told it might only be delivered next Wednesday. That is completely unacceptable. I do not have extra money to send again so that the family can buy the same baby essentials while waiting for your delayed service. This is not the first bad experience I’ve had with this company, but it will definitely be the last.