Who called from 2022497637

I have called this number back 202-249-7637 several time and asked to not be called again and they call at least once a week. I just got off the phone again with a mid-Eastern sounding man stating he is from some pharmacy in Canada. I told him again to remove me from the call list.
He then asked again when as a good time to call back....really! I told him NEVER.

If you do answer, just say "County morgue, whose body do you want to claim?"

Stop calling you jerks. We are on the NO call list

No message, no caller ID, just a big bother multiple times a day.

The number has come through on our caller ID every day. When I answer the phone, there is a pause and then click...hang up.  I no longer answer the phone and it will stop ringing as soon as my answer service kicks in.