Poor security

Hi have 2 concerns. 1. My sim card was swapped although i had a flag on my number ( that you have to into a Vodacom store to do a sim swap ) The lady that assisted me on Tuesday ( I only called in than because I though it was a network problem ) when I've asked her who did the sim swap, after I've asked her if her college didn't she that there is a flag on my number, she said that she cant disclose his name. But something don't feel right and with that I ordered something from the vodacom shop, but I cant track my parcel as the sms went through while someone did a sim swap.