Terrible Service

I am a guesthouse owner. On Saturday 31 October 2015 I went to Hi-Fi Corp Newcastle (Amajuba Mall) to purchase a TV as replacement for one of the TV's that had stopped working at the guesthouse. I ended up wanting to buy a small freezer as well. The total for the whole sale was R4800. When I arrived at the cashier I presented my TV licence which is in the name of my business. I have bought several TV's at this particular branch before with this exact same TV licence without a problem. This time however, they refused to sell me the TV because my ID number was not on the system. Then they wanted my personal TV licence, which I don't have because I stay at the guesthouse and my TV is included in the buisness licence. I don't understand why this was a problem all of a sudden. In the end I cancelled the entire sale and walked out of the store and Hi-Fi Corp lost a sale of almost R5000. I'm utterly disgusted with this store and I don't think I'll ever shop at any Hi-Fi Corp since this is not the first time I've received terrible service from this company.