Hi @Sean999 ,
Welcome to the community!
We're sad to know that you're considering to terminate your Mobile Service with us, please send us your account details (Mobile number/Customer ID) together with the best contact e-mail address and we'll have our Mobile Specialists contact you.
For reference:How do I private message (PM) in the community
I would like to terminate my TPG mobile service. I'm currently oversea and I can't receive calls or messages with my TPG SIM card. Please kindly advise.