INSTAGRAM MESSAGE DIRECT MESSAGING SERVICE

Hello! I was wondering if anybody is able to offer a service that I require. One time only. I need someone who is able to send a mass direct messages (The messages may vary, so I might change them up a bit) on instagram to people under a certain niche. I will find a list of people to send these direct messages and give it to you. I would like to send this mass dm to about 10 million people just once. THX. I dont think this is possible but if you have a service or software like this please notify me. THX Im willing to pay, Im not sure how much, but we will see .