Stop - Do NOT purchase – Remove duplicate contacts -- Support backup and merge now! Review

Just purchased this to delete duplicate contacts. If wiped out ALL of my contacts - not only on my iPhone, but in my iCloud as well. It has a "rollback" feature to undo selections, but it doesn't work. It spins and spins for hours and not a single contact came back. Thousands deleted. And there is ZERO app support. The app support tab brings you to a BS web page which tries to sell you on buying another web page. Do NOT make the mistake I did.
Review by Gene (CT) on Remove duplicate contacts -- Support backup and merge now!.