Unhelpful

Last year December I was due for an upgrade on one of my Vodacom phones. The courier called me and we agreed when delivery would be acceptable. The courier came twice at a different day & time from what was agreed. I went into the walk in store to see if they would be able to assist me and perhaps get the phone in-store so that I can collect. My daughter and I were the first and only customers the first consultant referred us to someone else. Whilst this person was trying to assist me with a very slow system the initial consultant started swearing and being rude to her colleagues in front of us. After waiting for a lengthy period for the system we were referred back to the rude consultant who advised me they can't help, when I explained again she brusquely asked on which number was I contacted for the upgrade. I have three Vodacom numbers and told her I can't recall. I was asked the same questions with no assistance and angrily left the store. Please advise on who is supposed to help us when consultants are rude & waste our time. I am paying customer and deserve respect as such.