Confused consultants

I called Vodacom helpline last night to lock my sim card after my nanny stole my sim card. The guy who was helping me on the phone confirmed that the sim card was soft locked and that the nanny would not be able to make or receive calls and sms's. Today I decided to test the sim card so I called it and it rang. when I called Vodacom again the consultant tells me that the nanny will still be able to receive calls on my sim card. the only thing they cannot do is make calls. <br> Which consultant should I believe now? they both work for Vodacom!<br> I need this sim card permanently blocked and it has been ****** and it was RICA'd under my name