You will lose all of your data. You could do a backup and then do an advanced restore and restore only your Address Book Database.
I still think he is logging into the Verizon account online to see the numbers that you're contacted and that are contacting you. If you wipe your device and reload the OS, and it still continues, I would take a look at your online account.
The difference between stupidity and genius is that genius has its limits.
When you take things for granted, the things you are granted, get taken.
Even a mosquito doesn't get a pat on the back until it starts to work.
Too many people miss the silver lining because they're expecting gold.
[BES 5.0.3 / GroupWise 2012 HP2]