Agressive following, not get banned

Hi I want to know how many follow you guys do per month? and unfollow?

3 month ago I was doing 1000 follows and 1000 unfollows per day until all my accounts get banned.

Now I have my accounts back and do the same, get banned again.

I want to know what are your recomendations?

Sending DM but with spintax can get me banned on twitter??