The boy was born to Thai woman Pattaramon Chanbua in December and while an Australian couple took his healthy twin sister, they left him behind, according to media reports.
"They [the surrogacy agency] told me to carry a baby for a family that does not have children... They said it would be a baby in a tube," Pattaramon told the Australian Broadcasting Corporation.
The 21-year-old from Chonburi province southeast of Bangkok said she agreed to carry the child for a fee of Aus$16,000 (US$14,900) -- enough to educate her own two children and pay back debts.
But she was now left with the baby boy, who also suffers from a life-threatening heart condition, and cannot afford to pay for the medical treatment he needs.
"I don't know what to do. I chose to have him... I love him, he was in my tummy for nine months," she told the ABC.
AFP