I have a 2018 Model 3 that is registered under my email address. In September 2019 my wife bought a Model X and registered it under her email address. One of the big selling points of buying the 2019 Model X was the free supercharging. The problem of having the 2 Teslas registered under 2 email addresses was that in the mobile app we had to log out and log in with each email address to see the status of each Tesla. At the dealership they told us we could request that the accounts be merged into a single email account so we could see both Teslas on one account. So I sent in an email request to do just that. Somehow in the process of merging the accounts we lost the free supercharging on the Model X. We contacted customer support but they say changing the email constitutes a change in ownership and therefore the free supercharging has been lost. This is a terrible policy if this is true. I have called and emailed customer support multiple times and they are sticking to their guns and refuse to reinstate our free supercharging. Has anyone else experienced this? What else can we do besides taking legal action? Tesla's customer support has been terrible.