Massive number of duplicates on contacts.
I'm getting thousands and thousands of duplicates on contacts. (30,000 and counting, but only have 250 genuine approx).Same on my imac, iphone and ipad. Have done all obvious things including merge duplicates and deleting and reloading contacts. I have 2 accounts on contacts, outlook and iCloud. iCloud list is the problem. Outlook list OK.
iMac 24″, macOS 14.6