Instagram Followers -- 2

i need a software that will extract a list of all the followers of a specific follower , then take that list and ask from my account to follow them . Only 100 at a time should be able to be asked to follow as that is Instagram rules. I need this in order for those followers see my pictures and if they are interested they will also follow me. But i need this software to get that list of my competitors, Iwill need to get the lisdt that list saved , incase i get blocked from my competitor , i will not be able to see the list after