On hold 3 times to speak to a teamleader

The worst follow up service. CELLC sold me a contract for a laptop which I received notification from their contracted courier would be delivered o. 11/04/2025. When I was unable to get hold of their courier I opted to call the contact centre to get answers. I fist spoke to Mpo for sales follow up. The service agent was of no help and spoke over me she then placed me on hold for 10 minutes. I tried again and same happened with the second agent. 3rd call I got through to a very rude agent Verqualene who continually spoke over me. This agent informed me that their department only has 1 supervisor and this person was in a meeting. When I questioned that I was sarcastically informed that she could see if any other departments supervisor wanted to take my call as I was through to the sales follow up department and the relevant supervisor would get back to me. I cannot understand here cellc finds these type of costumer service agents. Their contracted couriers contact number is not answered, how are client supposed to inquire on orders if agent or contractors are not able to give answers for item client pay huge amounts of money for. The courier sent a message with a driver name yet I am expected to loose an entire day because it cannot be received by my wife. But No one cane find out if the driver can estimate a time. Feels like the worst decision to order this item from CELLC