Super disappointed in Cell C's delivery service

I upgraded telephonically on Saturday. The agent told me I would receive my device by Monday or latest Tuesday. Yesterday I phoned them, got transferred between departments. Eventually got told that the information was wrong and I would only receive it Tuesday or Wednesday. I tracked my parcel on RAM the whole day. Sent an enquiry to RAM this morning to request delivery before 15:00 as I only work until 15:30. Called them at 15:15 only to be told the agent never forwarded my message to the driver. Asked them to follow up and call me back within 5 minutes. 20 Minutes later and still no call and no device. I am so disappointed and will never refer any friends/relatives again!