Medlife — Annoying number of promotional calls

I have been getting 2-3 calls a day for the last three months. it's getting ridiculous now, I have politely asked countless agents to please put my number in DND, everyone says yes and no does it. I am done with these calls, I don't want your medicines or your discounts, there is no option to delete your medlife account, and if there is it is not easy enough to access.
Can you please delete my frigging account from your database and stop calling me. I can provide my account details if you can delete it.