We haven’t had a chance yet to use our new transformer overseas, but the customer service experience so far has been amazing! As we are moving to Africa in a few weeks, we ordered the 3000W transformer as our main transformer allowing us to use many of our home electronics overseas. However, the first order never showed and had us very nervous about our upcoming trip. After reaching out to the Rockstone team, they quickly investigated the issue with the shipper and ended up re-shipping a new unit to us to make sure we got it in time for our move. Very much appreciated! The new unit arrived in great condition and we couldn’t be more grateful to the team at Rockstone for all their help. Thanks!!