Not the greatest customer support

I am in Thailand for a month and urgently required international roaming for work purposes. I received an SMS saying that my Roaming is now activated and everything worked so well after leaving SA - BUT for one day only!!! After that no service - stranded in Thailand . After many emails, which have been ignored, all I receive is a message saying that "Response time is 2-24 hours". I have now been without service for 23 days and counting. Wonder what would happen if I did not pay my bill for 23 days