Sales spam and poor service

I keep getting calls from different numbers from Absa offering me a personal loan. Two or three times a day. I have asked all of them to remove me from the list and told them I don't want one. I don't appreciate their marketing approach, I don't appreciate knowing that someone's bank fees are funding these telemarketers, and I don't appreciate that their internal processes are so inefficient that they keep calling me after I have asked multiple times to be removed and am clearly not interested.