[C:tL] This is how changelings are explained in media

You are kidnapped to be a servant for fae. But there is something put as a replacement of you, who continues your life as you serve as a slave...

But there must be some accounts of people missing? Take a look at this news article for an example:
http://thestar.com.my/news/story.asp?file=/2010/10/30/nation/7330365&sec=nation

Siti was captured after several failures, where she was found in strange places. When she was actually captured, her replacement was found 600 km away from his home.

In the world of darkness, there is always something behind the mysteries. Strange incidents can be explained if you know more. And in this case, if you know more, you know what really, really, happened.
 Text from link above copypasted here in case it is deleted:

Psychiatrist suspects girl’s disappearance linked to mental illness

BESUT: Siti Balqis Mohd Noor who apparently vanishes into thin air and is later found in strange places, including cemeteries, probably needs psychiatric help more than the services of a bomoh.

Terengganu Health, Unity and Consumerism deputy committee chairman Datuk Din Adam believes that Siti probably has schizophrenia.

A person suffering from schizophrenia may experience hallucinations and become delusional, he told The Star yesterday.

Din said the 22-year-old’s family should seek medical help.

”We should not relate Siti’s condition to supernatural elements,” he said.

Siti, from Kampung Gong Nangka in Apal here, who claims to have gone through several strange experiences, was found some 600km away at a friend’s house in Kuala Klawang, Jelebu, Negri Sembilan by police on Wednesday.

Besut police began searching for Siti after her family members lodged a police report on Oct 25 claiming that she had sent an SMS stating she was being held captive by orang bunian (fairies) in Gunung Jerai, Kedah.

Besut OCPD Superintendent Kamarudin Mohd Zakaria said that a team of policemen from here tracked Siti to Jelebu based on the SMS she sent to her family members claiming that she was in Gunung Jerai.

The SMS was traced to Batu 18, Kampung Ulu Klawang, Jelebu.

He said Siti travelled from Jerteh to Shah Alam on Oct 24 and the next day took a bus to Seremban before heading to Kuala Klawang.

Supt Kamaruddin said Siti had stayed with her penpal identified as Norwaniza Ramli, 19, whom she befriended five years ago.