Bad customer care and ineffective robotic Whatsapp system of "customer care"

MAKRO online purchase system is extremely bad. I ordered something online and during that purchase I chose a date of delivery as 08 July 2024 (Monday) because my deliver address is a business address and I don't work on weekends, They sent a courier guy to deliver on Saturday instead, and later received a message that since I was unreachable they couldn't deliver. So what is the point of specifying when to deliver when they will ignore the instructions on the system that THEY put in place for this very purpose?

As if that is not enough, they have a Whatsapp system that just does not work because it is robotic. It does not recognize your order number and keeps repeating one and the same thing instead of going forward with the conversation/query and you end up having to repeat yourself over and over.