Poor customer service

Cellc sucks big time... My phone required software upgrade for the past 2months or so, every time when I tried to upgrade it required a WI-FI which I then connected to my PC every time it will say interrupted after 90% so I thought maybe my network was not strong enough even when I tried to where there's free WI-FI it still gave me the same error, On Thursday I finally got a chance to go a branch in Midrand @ boulders I was told they don't do software upgrade they will have to book it in & take it to their walk in branch in Old Pretoria road Woodmead, the next day I went which was Friday(10/07/2015)I got there around 16:35/40 the lady took my name and number and she assigned me a person and told me to take a sit, around 17:05 the guy I was assigned to asked me what was I waiting for so I told him I need help upgrading my software and then he bluntly said HE WON'T HELP ME?? I thought I didn't hear him correctly and then he asked did If I saw what time is it, so I asked I have been sitting here for over 20minutes you didn't ask why he didn't answer so I just left.I used to hear people complaining about cellc I didn't understand why now I experienced it myself...So disappointed