Telemarketing calls

In the past couple of weeks I have had calls from telemarketers trying to sell me Absa car finance, Absa house insurance and Absa care insurance. Each time I answered, I kindly told the caller that I was not interested and asked that my number be removed from the database. It never was... I have blocked the number from my phone however the calls still show up in my call log and its already 6 calls this week. This is a courtesy review to let Absa know that I am in the process of laying a complaint with the Information Regulator because this is really enough now.