Received call from this number.  two rings and left no message

Received another call from this number -- that's two within an hour.   Left no message.

Just a couple of minutes ago got a call from this number, the ran time till recorder was triggered, left no message, caller identified as EnviroClean.  Heres the rub I have now blocked 4 numbers that identify themselves as EnviroClean.  Here are their other numbers: 1-239-431-9460 / 1-239-206-4523 / 1-239-431-3798 / 239-935-5601
The name of this company when googled shows no locations with the area code of 239  Their cont info is given as:2008 Enviro-Clean  •  Phone: (423) 472-2578  •  Fax: (423) 472-2543  •  E-mail: cleveland@enviroclean.cc
and the home office is in Holland Michigan.  I believe the enviro clean with area 239 maybe a scam, based on no message, calls almost every day, does not honor state or national Do Not Call Lists.  I have a CPR blocker I suggest you block all numbers from this 239 area code with the caller id EnviroClean

Enviroclean shows on Caller ID. Same company name as was on 239-935-5602, as I reported previously. I did not answer phone, and the caller left no message. My landline call blocker is getting very full!