What customer service?

Two years ago I walked out of this branch because of terrible customer service as well as poor product knowledge.My phone broke recently and I phoned this branch to see if they could assist me with an earlier upgrade seeing that my upgrade was due in 3 weeks anyway.Tried to get hold of Khulani(branch manager) several times with no luck.Finally got hold of Ahmed(area manager).Explained my situation to him and he said he would get Khulani to phone me.After a week I had to call Khulani myself.He said Ahmed did not discuss anything with him.Phoned Ahmed and he said he did speak to Khulani.Finally Ahmed tells me I need to speak to Mtn myself and get a ref. no.Then I can go to Khulani and he will assist me and if they don't have the phone I want Khulani will get it and and deliver it to me.Get the ref no and go to the branch to arrange with Khulani.The lady in the front went to call Khulani and I can hear them all having a chat at the back.After a while Khulani comes out and guess what?he doesn't know anything.He gets Ahmed on the line and starts talking to him in front of me and I could hear how the one is blaming the other.I walked out again.Disgusted!!