I've left for the holidaze and my phone credit expires 2 days before I return. A simple thing at any 7-11 in Thailand, but possible out if the country? I'd love to have a working phone when I land.

Not knowing the language or being able to read carrier messages isn't helping.

 

Any advice?

It can be done online. https://iservice.truecorp.co.th/?ln=en

 

If you have internet banking it shouldn't be a problem.

 

You could also ask a friend to top it up for you.  Just give him/her your number and cash and ask them to do it before your credit expires.  A message should appear on your phone when you land.

Indeed. Post the number via PM and I'll top it up with 10 baht which will retain any existing credit and extend validity for another month.