Constant spamming phone calls after the 100 or so times i have told them to never contact me again

I bought a bed a few years back from them, the bed sagged and after months we got it replaced finally after going weekly to complaint to the manager and then that manager left etc etc. Then i closed my account and told them due to bad service i will never buy from them again. I get calls almost weekly from different numbers from them. i block every time but then they have another one and the last person i told to put me on a do not contact list doesnt do it. they still call. I am furious and now i am reporting them for spamming its too much now...