I'm happy with MTN as a network

I'm happy with MTN as a network. My aim is to post only positive reviews this year...but this is now getting the best of me. I opened my account at Blaauw Village Pretoria North. The gentleman that assisted me wrote my surname completely wrong. It is so annoying. I logged an incident with head office, but now I must supply my MTN pin number via email??? How is this even right?