Instagram is being weird?

[Julia]

Okay so i have 7.2k, and i always follow 7500 and then unfollow. It has always worked right...but like this is like my 4th time doing that and once i had about 1.1k left to unfollow, when i went to who i was following, it showed maybe 10 accounts? It was really weird. So i unfollowed them, and when i left and came back it would say like something like "no users found". So i went to unfollowgram.com and it was letting me unfollow people good for a while, and when i got to 654 left, it would only show 15 people left, that i actually didnt want to unfollow. So then i tried high rated apps, and they would also only show those 15 people. And even when i go on IG, my feed of photos of people i follow only shows those 15 peoples photos. I AM SO CONFUSED, and i want to unfollow those 600 people asap. Please help me!

[Eddy]

first thats not cool following people then unfollowing them when they follow........... they unfollowed you because you unfollowed them