Dear Khun Wendelin,
Now the service provider (Dtac) lift the limit up to 10,000THB as you received a message.
**Please note the limit for your phone call as service provider informed. They are separate between
1. Stay in Thailand and call from Thailand to other countries the limit = 10,000THB
2. Stay in other countries call to Thailand or other countries the limit = 10,000THB
If you have urgent case for the future please message to me immediately.