Vodacom refuses to investigate SIM *****

This is my third complaint on this forum about the same incident of SIM swap ***** which occurred in early January 2018 - with the apparent involvement of Vodacom employees. Despite promises that I will be contacted absolutely nobody from Vodacom has done so. My emails to *****disputes and vbsadmin are completely ignored (aside from the autoreplies promising that somebody will contact me in 24 hours). Vodacom customer care is an absolute disgrace. They clearly have absolutely no concerns about ***** happening within their own company.