Bad service Cashbuild Orange farm ext 2

We went to cashbuild in Orange farm ext 2 next to Eyethu mall today. The service we received was so bad , there's this guy who came to us and told us to please buy quickly and leave the store as there are people outside who wants to come in and buy. We were buying lot of stuff , we couldn't just run and grab stuff like a grocery store. We had a list of stuff to buy. I found it rude and felt disrespected . Overheard staff members speaking and saying " I wonder if they are buying or just looking " ! I felt so annoyed really . We ended up spending over 10k in that store today . Even the cashier was very rude and I asked her why she's angry and she said she's not angry that's how she looks . The reason I asked was because she spoke with an angry face " is this all or there's more you are buying " we said yes there's more and she said " when I'm done with this - I'm leaving you guys because you don't have everything here... " That time we were waiting for sales assistant to bring the rest of the stuff to the till but we had other stuff so she can start scanning. I'm a store manager by profession so when I see this kind of service , I become so angry . People are losing their jobs and you treat customers that pay your salary like trash .