Unacceptable debt collecting attitude

My late husband was financed by wesbank in 2019 when he bought a vehicle, he unfortunately passed away 2 years later in 2021.It has been a struggle to get a definite thing and way forward regarding payment of the vehicle.Yesterday I received a call from a guy by the name of Anton Hattingh, who was very rude on the phone and threatening me with the sheriff, warrant and court order, he claimed to be from FDE debt collectors and that he was at my home at that time.I was not at home at that time,I was at work, only my kids were home.He asked for Mr Ben Hlongwane(my late husband) and my son told him he passed on he then said 'he knows' and then asked where I was and my son gave him my contact numbers.My son verbalises that he(Anton) was knocking very rough at the gate that they couldn't ignore him as it was during load shedding and the intercom was not functioning.I don't mean to be ****** or anything but I don't think if I was of a different race and gender he was going to have the same attitude as the one he came with at my home.He took pictures of the outside of my yard and took the inside of the yard over the gate without my permission and were sent to me through whatsapp.I am not sure if that is allowed and I don't know the reasons for the photos taken, I feel that it was invasion of my privacy and compromising my safety.Anything can happen, you can't trust anyone especially people you don't know.I have 3 other vehicles that belong to Wesbank parked in the yard and 2 bikes, he could have taken the photos to later send people to come rob us as he knows that it's only me and the kids. I have a 2 metre wall at the front of my yard because I don't feel comfortable when people who pass by can see the inside of my yard but Anton managed to take photos of the inside of my yard over the gate,I am curious as to how he took them. I don't deny the fact that my late husband is owing wesbank and that as the executrix of his estate I am liable to settle all his debts but let my privacy and safety not be compromised in the process.I can't believe any unidentified stranger that come to my house claiming to be a debt collector from wesbank.