That certainly is a conundrum! I want to help, appleiphone4s! So let me clarify, you do not have record in your phone, nor on your call logs online, that you called someone, however, they do? Correct? Could you explain a bit more about the calls they are getting? Do they pick up? What happens? Any message left? Do their call logs on the phone match what is showing online (http://bit.ly/xB4iTc) on the bill? It sounds like someone may be spoofing your number. This basically means that they are calling from another number, but using a program to make the call look like it's coming from your number. You can find out more information here http://www.fcc.gov/guides/caller-id-and-spoofing.
There really isn't any way to prevent this from happening. You always have the option of changing your number online to prevent these occurances. Please reach out if you have any other questions.
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