Xiaomi South Africa poor service

What is the timeline for a complaint to be resolved. Is 48 hours a good lead time? I would think so. After a terrible experience with a sales person at Xiaomi Canal Walk, I am no closer to closing this topic. I now believe this is a clear indication and evidence of the poor leadership at Xiaomi South Africa. It for this reason that the smug sales person had the audacity to tell me I walked into his store and I should greet him. The arrogance of entitlement and the lack of articulation and understanding his reason for existing at Xiaomi. For the customer.