Unhelpful staff at MTN

On Saturday, 21/01/2023, was in the MTN La Lucia Mall to query about a pre paid sim card that I couldn't get connected on my open network handset. The staff member was addement that my handset is faulty. That's way it didn't want to accept the sim card. As explained to this staff member why would it accept a Vodacom Sim but not the MTN, his response was, mam your handset is faulty????? Drove all the way to Gateway Mall and the explanation I received from the consultant at Truworths was due to me not using the Sim by making a call or send a SMS, the MTN Network 'blocked' this number. The question is way couldn't the staff member at La Lucia explained this first-time around. As a customer I must run around and try to sort this out which could have been prevented if staff is properly trained. That is why I will never use MTN network or suggest it to families and friends. After sales service is poor.