Disastrous company! Finally, after three weeks, I ...

Disastrous company! Finally, after three weeks, I have found the systems that were offered as immediately available when ordering and delivery within 7-10 days was promised. However, all paid parts in the same order such as 10m refrigeration pipes are not included. Today I called the customer service several times, they CANNOT see the status of my order in the system, have no idea how to proceed with my order, whether more packages should come (no automatic notification to me). Very unprofessional! The customer service always offered to call back, but never reported. The statement was always: my colleagues are all talking ... Does the company only employ interns for the summer holidays who have no access to the internal system?