No like I never turn on the cheat, and I test what you say but when I check their ID in status again it just the same ID.Okay, tried it out just now. Seems there's been some changes to old version either base-game or cheat, which disregard the item count for it actually.
So yes, disable the cheat(s), then check friendlist for those two for their id.
After that, like John said /deletefriend theID
replace theID with the id you got from their status window (again, AFTER disabling the cheat)
then right click the npcs in your inventory. That fixed it.
Alternative to it would be to go into save editor and straight up remove them from your inventory, I reckon.
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