Gain 0.5Milion Twitter followers. No pass given

I need someone to increase my twitter followers by 0.5 million . I currently have around 12k but i need to have at least 500k+, i run a deals website and i use my twitter every day. I need to increase the following from sound marketing - NO: black-hat methods NO fake accounts 60%+ followers must remain followers for 12 months at least If you are successful there will be A LOT more work for other websites and twitter accounts