If you had a device bought here, yo

If you had a device bought here, you could connect straight to 8151-7033, but as you are in Thailand I think you should put some numbers on the front, DDD (Dial, Direct distance) code of the country, I think . I also tried to call you ... +66 83 089 4265 this is not your number? It says: "Dial incorrect, check the number dialed