Telemarketer regarding our website... OH PLEASE

Get numerous calls from these people saying "oh we are from social network" daily. Will not give me name of their company have told them politely to not contact me and put me on the do not call list. Still consists. Wish i knew what company sold them my information.

Have received as many as 4-5 calls an hour from this company. They let it ring 4 times and do not leave a message. The first person I spoke to has an Indian accent. I have asked to be put on the do not call list, but I continue to get calls, which I do not answer.

same as other callers. Called me 3 times in a row. I finally answered figuring it must be important. B.S. sales call. When I called the number back it says the number you are trying to reach is disconnected

I get numerous calls a day from this number than after about 11 seconds they just hang up no voice or computer sound,  Driving me crazy