Absolutely poor service at Hi-Fi Corporation

I went into Hi-Fi Corporation at Festival Mall to see if I could find a Tablet or Laptop. After about 10 minutes standing and waiting for service, I had to go and call one of the staff members for assistance, since they were standing and having a nice conversation with the security at the door without even offering to assist me. I got hold of a young lady to assist me, but I can't remember her name. I asked her if I can have a look a device that were locked up in the display case and her response was that it is the only one left and they have no more stock available. I asked her if I can purchase that one then and she said yes, but the battery is flat and they will need to charge it first if I want to have a look at it. I told her that I don't need to switch it on, I just want to see if it has a USB port. She then called a gentlemen and he said yes it does, so I said ok, then I'm interested in buying it. The lady then told me that they can't open the display case cause the key is broken. I called the manager and she said they will get a locksmith, but they will only come the next day. I phoned head office to launch a complaint, but even they were not helpful at all. Still waiting!