2bepissedoff asks: "According to my T-mobile phone bill, I have been receiving incoming calls from a 'NBR unavailable', since February, with talk time ranging from 1 minute to an hour. The strangest thing is, I have never received these calls (my phone doesn't ring and I haven't talked to the caller). I only started noticing them when my phone bill was charged over $40 more than my regular bill. Of course, I have a family plan (2 people only, 2 lines) and I talked to my partner. The answer: he too had not received any of these calls, especially over 300 minutes per month of them. We called up T-mobile twice and claim the possibility of phone cloning. Both representatives hung up on me, thinking I was trying to con them or something. Any advice to what this could be?"
I did a little investigation and I've noticed that some of the NBR minutes overlap with calls I actually make. For example:
'2/22 at 3:28 pm "NBR unavailable" 17mins usage.
2/22 at 3:44 pm "-(# I made)---" 3mins usage.
So if you add up the time 3:28pm + 17 mins = 3:45 pm. The time when I made my call was at 3:44 pm. This reoccurs several times. I still do not think this is enough evidence to convince T-mobile of Phone Cloning. So I am thinking of switching either my number or my service provider. "