Twitter followers program / bot / software

There are various websites selling large amounts of twitter followers, and I'm interested in getting this software that allows this. Certain software causes real / blank / fake twitter accounts to follow you without login/password and without you having to follow them, and this is what I'm interested in. - The software must be automated NOT manual. - The software must be tested and works properly. - The software should NOT get my account banned / suspended. - The software must not have a limit on the number of followers I require, as i may need between 50,000 to 200,000. Experienced only, more details will provide to PM. Thank you for your interest!