This lady just called my boss and asked to speak with him. When I said he was not available she wanted to know if he was in the office. I told her again that he was unavailable. She asked when he would be available and I checked his calendar and said that I could schedule a call in approximately 2 weeks and she stated that she must talk to him today. Said she was from some company called Ahron (sp). Probably a marketing call. I put her in voicemail. I feel that if it were "urgent" that she would have shared a bit more.

They been doing this for years now. Eastlink won't or can't block it.  
sigh

Unknown company of origin tries to send cold call faxes to our regular business line. Happens every 20 minutes.

It's been months that these a***s have been calling at all hours, clogging up my phone line, voice mail etc trying to fax me! I too get a unknown or the (514) 958-0000 when i track it.If anyone knows how to stop them please fill me in. I've been dealing with my local phone company with no results.

I get calls from Unknown, (514) 958-0000, and (514) 958-0001 ALL day on my business cell phone.  I filed a complaint with the do not call list website and seperately with the FTC directly.  I don't think they can do much but if WE ALL complain to the FTC maybe they will work harder to figure it out.

I am so frustrated! We have been getting calls from this number and blocked numbers for two and a half years, ever since we were given this phone number when we moved in. We get calls at all hours of the night and day 4-8 times a day!! I don't know how to get rid of it! I live in BC, Canada and I have tried several numbers people have suggested to get ahold of these people and I have not been able to get through. I use my phone number for business, but I guess I will have to change it as this affects our home life with how often they call!! I hope someone finds a way to get rid of these telephone losers.

The number you give +1 800-712-8820) is for Rock Mining Company who try to sell you a piece of a gold mine for ONLY $249 per MONTH. lol Not sure how that is connected to Premier Healthcare, but both sound like scams so perhaps the owner is diversifying.