I recently purchased an unlocked Sprint Treo 600 and would like to use the phone on my current Verizon plan. I have called Verizon 3 times and they say the ESN is not valid. I also tried to activate it online with no success, the techs say that I cannot use the phone. I have the program code (##000000) and the correct ESN (I accessed it via ##786) how do I activate this phone??