Kalyani Motors Receive calls every day

I receive calls almost every day checking if I’ve enquired regarding Alto. I’m facing this issue for almost a month now. I’ve been patient enough to tell every agent that I’m no longer interested and to add my number in DND. The agent says they’ll add my number in not to call marketing list but I continue to get calls. This is annoying right now. I no longer wish to receive calls from Kalyani Motors. This is not the way to treat customer and annoy them with the same questions and calls every single day in spite of telling to stop calling.