Bad Service across Adidas Stores

I went into Adidas Stoneridge yesterday and there was a track pants on sale for R500 from R999. I took it to the till and I was then told it's R999 . I went back to the rack to double check and the item and a few others had R500 on the price tag. I called the Sales person on the floor and he was so flippant and shocked himself that the price changed. He said the system must have updated and the pants is now R999. That is not my problem. Also how do prices change and the staff is not aware. He just left me and walked away clearly not interested in my complaint. I have just had bad experiences with the brand Adidas all December. I purchased online and the items was not what I expected. It's almost a month I am still waiting for the items to be returned. I tried returning them at Adidas Meadowdale, such bad service. The person working there made me wait almost 20 minutes to do a return just to be told by the Manager who was called to authorise the return that I cannot return items with their Store. Adidas staff members across the brand needs training and need to understand their processes. They also need to understand that we Customers spend our hard earned money so that they can meet their targets and stay employed.