how to stop the service of the cellphone SIM card&payment problem
Hi, I'm a South Korean who study in United State. I bought a cellphone SIM card from at&t with AT&T UNLIMITED STARTERSM plan($35 per line/mo) to use while I study in United State, but due to Corona-19, I came back to Korea, and I want to stop the plan until I return to United State. So, I tried to log in to at&t website, but the site said "You don't have permission to access "http://www.att.com/my/" on this server." and I cannot access to anything about my account including log in. Also, as I said at first, I made a payment with $35 plan, but I checked that $46 was taken from my account every month. Please let me know why I cannot log in to at&t website and how to stop the plan, and why the money I didn't approve kept taken out and please refund it.