Airtel — unwanted message and call

hi,
i m fursted with these unwanted calls and message from airtel
i reported in airtel and they told me a phthetic thing that it wil take 45 days to stop these things.and they alo told me that is from trai.they told me that trai has told them to do this .its really disturbing they give call when i was in office amd i m in important meeting.they are just sucking.they also distribute the no to vrious company without my permission.i am sure that my phone number is my personal property so why they are distributing my number