Bad customer experience at Telkom Southgate

I went to telkom in Southgate yesterday and when I got there I asked if the have any specials in store but the lady said they do not have specials however she can show me something I can buy which is within my budget. She showed me a phone in my budget and then I took it, from there a technician assisted me with with the phone and I asked him if they have any specials in store but he was also clueless and referred me to the brouchers (magazine). I took that phone as well as the magazine, when I got home I checked that magazine only to find out that there are specials. Today I went back to tell them that I actually don’t want this phone and I want the one of special because from the first place I wanted a special hence I asked before anything. The lady that was assisting me Tsholo Madibedi today said there is nothing they can do. I find this irritating and frustrating because I asked before I can even purchased and now I have to deal with the admin of driving up and down. This is not a good customer experience to find people who do not know their product. I opened a case and this is the case number they gave me ***7