Follow up on the collection agency

December 21, 2023, Thursday evening, 8:43pm, pacific standard time, apartment in Dana Point, California, USA. I emailed the apartment complex yesterday, they said my balance was paid and they don’t use that collection agency. I researched the number that called me. They seem legitimate. After calling and leaving a message I didn’t hear back. The whole thing is weird. Otherwise, I stayed in Palm Desert last night and worked in the office until two then came home. Had a quick dinner with mom, took my daughter to in and out, then came back and finished laundry. Tomorrow we go to valencia for two nights to celebrate the Holiday with my daughters moms family.