Terrible experience with the Dispatch Manager!!!!!!

I had a terrible customer experience with the Dispatch Manager at Builders Warehouse Gezina, her name is Anna. It is really a shame that a whole manager could not speak to me decently enough respecting the fact that I'm a client. I was shouted at immediately after greeting on the phone - didn't even wanna listen to what I had to say. She obviously came to speak to me being very negative about whatever and then she shut the phone on my ear, By the way I'm the one that called. She went on to say how I was not supposed to be able to order the stock items online because they haven't had them since 2014. This, I know is incorrect because I ordered 30 of those items and had 9 delivered! Nonetheless, Anna the manager obviously thought that was not her problem and hung up the phone on me. Is this how they are trained when they don't have answers for the client??