I shipped back all equipments using Prepaid UPS shipping. I was afraid to drop in any UPS box so I handed the box to the UPS person who comes to our office builing every day. Now Verizon says they did not receive the box and charge me almost $800 for the equipment. According to Verizon shipping instruction, 'customers are reponsible for equiment until reurned to UPS/USPS', and that was eaxctly what I did. I called customer service and was told I was supposed to write down the tracking number. I don't see anywhere that this was written on the shipping instruction or anywhere saying verizon that prepaid the shipping would not have tracking number. What's going on here?