Please help me to cancel my account

Hey there @Jeongsu Lee. Living abroad seems like such a cool opportunity! Sad that T-Mobile is national instead of global. Sounds like you were on top of things getting your service cancelled and I'm glad you got that confirmation email. The second sentence in the email you shared does say you have 45 days to return your equipment to avoid any charges. Since you have already moved, do you still have that equipment with you? You can try reaching out to our customer service team by calling our international number or messaging on one of our social media profiles linked at the bottom of this page. They may be able to work with you to find a way to return that equipment asap and talk about options for additional charges that may have occurred on your account. 

For the 60.75 that was charged after cancellation, it could be the charges for the final timeframe on the account. It could also be final charges for equipment, third party purchases, or something like that. The only way to know for sure is by reviewing the bill itself. Usually, that is sent to the address on file when the account is cancelled. If you have your mail being forwarded, that could still get to you just a bit delayed. If you don't have a way to get that paper mail, our care team may also be able to email you a pdf of that bill so you can see exactly what the charge would have been for. When you do get the bill, pay close attention to the dates of service listed at the top.