Spam calling and have no idea about the POPI act

How an unsolicited call from Meals On Wheels looking for sponsorships. I informed the call center agent that the call is unsolicited and I asked where she got my phone number from. Her reply is numbers are computer generated, and when I informed her that their calls are spam, she told me that Meals On Wheels are aware of the POPI act (completely unrelated). I then asked to speak to the supervisor, I explained my issue, and got an apology. Meals On Wheels, STOP spamming the public with your unsolicited calls.