No assistance!!! Receptionist

Got a home internet sim last year October, and this year they called to upgrade it to a LTE sim which I could also use on my phone and not only on my home router. Fine, I agreed as my phone has two sim ports, and it worked fine. Only shortly I started receiving SMSes with private and confidential info for a person I don't know, followed by calls, even at odd times of the night from strangers. When I contacted Vodacom about the issue as the sim number they issued is still linked to some one, they said they only wait 1 month before recycling a number and my best bet is to PAY them a minimum of R80 for a new number, which also may also be recycled. I am basically a receptionist for person I don't know. Never mind the POPI infringements, the persons balances, car tracker and everything reports on my phone. No assistance or solution from Vodacom. Poor service really.