Hangs up when phone is answered. Scam caller.

Caller: Someone From Global Services Free Installation of new bulbs

First they said the wrong name, next thing later they said my name and then basically stated I was approved for free installation of new energy saving light bulbs told them I don't even have light bulbs I got fluorescent lighting long saving lights. The woman couldn't understand, I guess it is a call scam centre in India as there accent was easily distinctive of Hello Buddy ! hello sir... bla bla bla bla bla.... Didn't give nothing out, but will trace them next time and will be done for...