My cable modem, router and VOIP phone-adapter are on UPS, so no power-break could damage them. I have rebooted them all multiple times and it did not help. I have also re-set all SIP setting to my VOIP adapter and it did not help too. FPL website SIP SETTINGS page shows that I am connected. Besides, if I can make outcoming calls it means my VIOP adapter works. If I make 10 calls from my cell to my PFL phone - my FPL phone will ring probably once, but if I pick it I hear only silence. Voice answering machine works inconstantly (a.k.a. from time to time) but mostly it does. Since the same date (Feb-28) I started to receive multiple calls/rings to my FPL phone, but when I pick the phone I hear silence.
What happened yesterday could be a subject for good stand-up comedy show. Namely, my FPL phone rang, I picked it - and (unbelievable) I heard a human voice!!! The guy on the line told me that many people called him and asked for Mark (which is my name) and they told him what number they dialed (it was my number), eventually he dialed my number too and vuala he found me! This guy and his girlfriend ended up to be also a customers/victims of FreePhoneLine.ca, namely their phone also stopped receiving incoming calls and also form Feb-28. They gave me their PFL phone number and also their cell number. I have dialed their PFL number and ended up talking with absolutely different family. So, I had to call on their cell to confirm that I cannot reach them on their FPL phone. Guys from FreePhoneLine.ca you do amazing call routing job.

I tried to contact FreePhoneLine.ca customer servers via email but nobody has replied. I have posted request for help on this forum - and again was referred to very long chain of other FPL complaining customers struggling to find solution on their own. So, no phone to call and talk to customer service, no reply to my email to customer service, and no response to my previous request on this forum. Guys from FreePhoneLine.ca thank you for your exceptional service.

I am kinda tired of this "free" service (I paid $50 for account, $25 for number transfer, $100 for new router supporting VOIP, $40 for VOIP phone adapter and I pay roughly $15 a month for their long distance service). I am 7 days without incoming calls (a.k.a without phone) and I see no way to get any technical support to solve my issue.
If FreePhoneLine.ca won't look and fix my issue until March break I will move to other VOIP provider.