This number continues to call me and leave no voicemail. When I called back because I was annoyed at receiving calls 3-4 times per day from this unknown number, it offered no information and asked me to enter my phone number. I felt like it was a scam so I just hung up.

This place never leaves a message and its a collection agency for comcast. Funny thing is my county does not have comcast, they have their own cable company so its a scam call that calls 15 times a day that get blocked the moment 510 shows up. They stopped for a while after I started fowarding them to my local police dept. Would have continued that but was asked not to do that anymore and report was taken.