Who called from 2132242033

I recieved a call today and they left a message saying they were call from Dynamic Recovery Solutions, which is a  full service debt collection agency according to their web page. It shows on my caller ID "Research Center." called from 213-224-2033. They call me about 2 or 3 times a week. I NEVER answer!

I keep receiving unwanted calls from this number on my government owned cell phone.

The government dictates this cell phone  I use for work is not to be used for public use.

This number shows up on my caller ID as "Research Center." They mistakenly thought our answering machine was someone who answered the call. Our answering machine recorded them asking for one of us and then saying that their name was "Mike Anderson" then angrily and repeatedly saying "hello, hello, hello!!!" then slamming the phone down. This person had a weird accent so I'm pretty sure Mike Anderson was not his real name.

I continue to receive calls.  I answered one and respectfully asked them to remove my number.  Another call comes in 40 min later and again I decline.  The operator gets angry and raises his voice w/ me yelling and asking me why I won't do their survey.  He then hangs up.  I've received 5 other calls since from this number.
The number for this is close and is (213)224-2034.

called eight times in one day, complained about it to them and they hung up on me how rude is that.