Below is a prepared post based on the current Reddit consensus and verified information regarding account unbanning.
Before paying, try appealing the ban yourself one last time. If you do hire a service, ensure they have a long history of positive feedback on Reddit (checking profiles for bot activity) and avoid anyone asking for your login credentials.
If you post about a ban, bots will flood your comments saying, "Contact @[Name] on Instagram, he got my account back instantly!" These are 100% scams. They will take your money and block you.
Success is common with false positives tied to background hardware/software conflicts. Extremely Low