Courtesy Toyota of Brandon

I purchased a new 2016 Toyota Tundra crewmax 4x4. I bought my truck primarily to pull our rather large boat around to different states and areas to experience the lakes and waterways as far as 2000mi round trip. Having navigation was a high priority because turning around on small country roads or getting lost are not options. I was lead to believe by the salesmen (there were many due to quitting) that my navigation was a true gps navigation. When towing our boat to an area unknown in South Carolina, we got lost due to losing cell service causing the navigation to just stop. We didn't know the point at which it stoped guiding us so we didn't know where to go back to. We had nothing as a back up because we were using our only real navigation source our cell. In an attempt to fix this problem I reached out to the director over the dealership and was told the only way to fix this was to buy another new truck for more money. I'm not interested in paying more when I just bought this one. I gave them plenty of chances to make this right. They were clear to me it was not their problem. If you are wondering why we don't just get a dash mount gps? Its because my brother had one on his dash/windshield, was rear ended by a person texting, and gave him a severe head injury. So now we are forced to sell our boat. My wife is due for a new vehicle this year and we are so upset over this, we will NOT be going to "Courtesy Toyota" due to not taking responsibility for their lies.