Has anyone else dealt with Sentry Recovery & Collections debt harassment?

I’ve been getting nonstop calls from Sentry Recovery & Collections, and it’s starting to feel like harassment. Sometimes they call multiple times a day, and the voicemails sound really pushy. I’m not even sure the debt they’re talking about is mine, but the way they talk makes me feel pressured and anxious. I’ve read that this kind of behavior might actually cross the line into debt harassment, and I’m wondering if anyone else has gone through this with them.

I found this page that talks about how to stop Sentry Recovery & Collections debt harassment: https://protectionforconsumers.com/end-sentry-recovery-collections-debt-harassment/

Has anyone tried taking steps like sending a cease and desist letter or disputing the debt? I’d really like to hear from others who have dealt with them. Did anything actually work to make the calls stop?