I'm on a do not contact list - still getting calls

I'm still getting calls from Absa (via a provider, Velocity I believe) despite being on every do not contact/do not call list (including the DMA National Opt Out registry). <br> <br> I've mentioned before to be removed from Absa marketing correspondence but these don't seem to go through and I get bad attitude (hung up calls, condescending language) from the agents when I say I don't want to be contacted. <br> <br> I expect a telephonic response from Absa (or their service provider) to ensure that they comply with section 45 of the Electronic Communications and Transactions Act (Act 25 of 2002) (ECTA), as read with section 11 of the Consumer Protection Act (Act 68 of 2008)(CPA) or alternatively, as the case may be, Section 69 of the Protection of Personal Information Act (Act 4 of 2013)(POPIA).<br>