Debt collection scams can be one of the most frightening and persistent scam types. Victims often report that scammers harass them for weeks or even months, both at home and at work, trying to get them to pay a debt they don’t even owe. BBB receives numerous reports con artists changing tactics just to get the information necessary to collect information or cash. 
https://www.mydailyrecord.com/news/bbb-announces-top-scams-reported-in-2022/article_710850ce-929f-11ed-8d5b-03e6a32adb7a.htm