I have an account from right as they were bought out. The phone number I got gets a constant stream of weird calls from voicemail systems and collection agenci

I have an account from right as they were bought out. The phone number I got gets a constant stream of weird calls from voicemail systems and collection agencies. I had it forwarded to my office phone for a while, and I only figured out the reason for the calls once I started getting email notifications from GrandCentral about voicemail messages that the mystery callers had just started leaving.