Based on the provided information, it appears that the caller is likely a telemarketing company, leaving repeated voicemails with the same message. The fact that the caller had to hold for the next available agent and couldn't actually reach someone suggests an automated system, which is often used by spam callers. The caller's experience of finding the exact same voicemail from a different number implies a large-scale operation, which further supports the idea of a telemarketing company.
I received identical voicemails from 913.485.9482 and 713.332.9810, which I tried to return, but the calls didn't connect