Unauthorised Sim swap

I have been with Vodacom for over 25 yrs and never had any issues with them, until 2021 October when a sim swap was performed on my starter pack without my permission. That resulted in me losing money from my bank account,47K to be precise. Vodacom confirmed the sim swap and promised to investigate. It will be one year in October, no word from them. The money that I lost through Vodacom's negligence was gonna go a long way in helping me start a small business since I lost my job.All I need from Vodacom is an apology and ownership. Also compensation for my losses and inconvenience caused.