Really poor customer service to locate missing parcel

An absolutely frustrating process trying to get in contact with Fastway Couriers to locate a missing package. My order from Temu was shown as "Out for delivery" on 9 April but nothing arrived that day. On 10 April I got a notification that it was delivered but I did not receive any package. I've tried all the avenues of contacting them: Whatsapp - "the next available agent will be in touch shortly" No one ever responds after this message. Telephone *** - Waited in the que forever only to be cut off with a message saying there are technical difficulties. Live Chat - Agents never responds or the one time someone did they just posted the status is delivered and ended the chat. My whole issue is that their system shows it is delivered but I did not receive anything and the agent gave me no chance to explain this! Had to restart the chat process with no response to my query. This is extremely infuriating to not be able to get in contact with them to resolve the matter. Really poor customer service.