We just received a similar phone call, but it was from (780) 486-1363, and the Caller ID displayed; ECO HLTH SOLUTN.  The caller was a woman with an accent but quite understandable.  She addressed me by my last name correctly (worrisome), identified herself, first name only, stated that she was from Eco Health Solutions and calling about a survey that someone in our house had completed about air quality.  I replied that I did not participate in any survey.  She then said it was some one whose name started with the letter "L" and that had completed the survey at either a doctor's, dentist's, or pharmacy.  It so happened that "L" was sitting in the TV room, so I called out to "L" and loudly asked (knowing what the answer would be),  "Did you fill out a survey at either a doctor's, dentist's or pharmacy about air quality?"  "NO".  L  replied.  I went back to the caller and said, "None of what you are claiming happened".  She then asked "Then you are not interested in continuing with this call?  "No thank you",  and hung up.  Summary: they now have access to names, not just random phone numbers.  That is worrisome.

I just answered a call from them. They said they were sendin a 300$ gift because of a survey we did. but my spouse needed to be home. When I told her that he worked away he said s****y and hung up. So idk

Got a hate message from this number....trying to figure out where it came from.

They did the same to my elderly father with dementia. Called him offered a gift  claimed the machine would help his dementia. The salesman had my fathers check book in his hand! Disgusting, he was about to sign a cheque for thousands when we got their and asked him to leave.

A female sales rep from Eco Air Systems knocked on my 73 year old, mentally unstable, father's door in June. The lady talked him into a air purifier. He told her he could not afford it but she played on his loneliness sitting and smoking with him saying she would come back in 2 days for a visit. My dad unplugged the system and put it back in the box. They have a 10 day return date. He says on the 10th day he was contacted and he let them know he does not like it and to pick it up. Eco Air Systems is claiming it was the 12th day. Thankfully he was able to stop payment through his bank and they have not received a dime. We have still not settled.

If I were you, I would simply keep the unit,just don't answer the phone or the door if it's them close it. They won't take you to court, they will just write it off as a bad debt expense in their accounting