Doesn't the POPI act protect consumers from this harassment?

Cartrack tried to debit my account the day before my payday. I incurred bank charges for a returned debit order and they won't take accountability for it. That's fine. On Tuesday 27 February 2024 I agree to a resubmission mandate for the same or next day. So they were supposed to collect the money. Cartrack only collected the money on 1 March 2024. From 27 Feb, till today 4 March 2024... Cartrack has been calling me as early as 7am daily and sometimes even 3 times a day. I tell each person I speak to this story and request Cartrack to stop calling me. Today they even sent me a WHATAPP... For an account that is already up to date. I have been requesting, since last week for them to remove my number from their database if noone can stop the calls as *THEY ARE AUTOMATED*. This is down right harassment and it is really traumatizing. I don't even have the car anymore, it was written off in December last year.