Thank you Vodacom for nothing

Good morning, I have brought the following number under the attention of Vodacom whom has been harassing me and using this phone number to try to obtain personal information from me \on behalf of Vodacom". Corne from Forensics contacted me last week to inform me that the number has been blocked and will no longer be able to be used. SURPRISE this morning when the same number tried to call me again and I also phoned the number back and it is ACTIVE??? Why would you tell me that Vodacom has contacted them"