Bad Attitude

Went to Vodacom4u to buy airtime, the lady (Nomsa) typed my phone number incorrectly. She was forever on her phone browsing Instagram while helping me. When I came back to let her know about her mistake she was very rude to me, still browsing her phone. She told me she will never apologize to me, when I asked for a manager she said she's the senior supervisor there no manager. I am NOT happy with service she gave me and would like her to APOLOGIZE.