30% fake followers and the rest are real 
What a great news it is!! Your followers are 30% fake that means those will be dropped any time. And if the drops happen frequently then there is a chance to be banned profile on twitter and other social media. We should avoid this type of service at any cost otherwise we have to loss our profile.You Probably right but to as a start its very helpful ...maybe the 30% already gone but the 70% stays !! and still growing that's mean our way is working .
You should know more about growing accounts