galaxy s5 making random calls all over the us
i apologize if this has already been answered, hope so. a couple of days ago i started receiving calls from people all over the US. they state that they are returning my call. i'm receiving over 100 call backs a day now. my phone does not show any outgoing calls. i've spoken to some of the callers and they all say the same thing, when they answer no one is there or it hangs up right away. an AT&T customer service rep recommended doing a factory reset which i did. i had four missed calls waiting while it reset.
any help or information please
i apologize if this has already been answered, hope so. a couple of days ago i started receiving calls from people all over the US. they state that they are returning my call. i'm receiving over 100 call backs a day now. my phone does not show any outgoing calls. i've spoken to some of the callers and they all say the same thing, when they answer no one is there or it hangs up right away. an AT&T customer service rep recommended doing a factory reset which i did. i had four missed calls waiting while it reset.
any help or information please