Clientele harassment calls

I received a call last week from ***573 twice and the agents said they are from clientele life and I said I am good, I am not looking for a life cover. The second guy was so rude and complained that I didn't answer the call the first time and I told him he needs to get his people's skills checked because I don't even know him.

Since last week I get calls in the morning and afternoon from the number 066 012 and the last 4 digits are different and when I unswer they get dropped. I have tried to block the numbers but they still call and always get dropped. It drives me crazy.

All I know is that the agents said they are from Clientele. If they are not, clientele needs to look into this