how to erase all contacts in iCloud
How can I erase all my iCloud contacts? On my iPhone I have about 750 contacts, but iCloud has almost 2300 contacts and many contact groups. The unneeded contacts and contact groups are from a consulting job I had that ended years ago, and I don't need any of these old contacts.
Right now these unneeded contacts are messing things up when I try to use an app that synchronizes Outlook and iPhone using iCloud as the intermediary?
Windows, Windows 10