English audio transcription

We have 12 files, they are in clear and audible English language. Each file is an interview with someone. The total length for all interviews is about 700 minutes. We want to transcribe them into 12 files, with highest quality. This is a rush job so preference is given to those who can complete it in 48 hours. We know there are automatic methods online, you can use them, however, they are not accurate. If you plan to use them, you still need to go over the entire audio files and check the work word by word.