Hi,
I can do the job for you as I have been doing transcription (medical) for five years continuously and have an eye for detail and can turn it around in 7 days as the total length of the files is almost 12 hours. If the files have clear dictation and audio, I can finish it sooner. It all depends on word count and speed of speaker. Since they sound like instructional audios about offering namaz (prayers), I do not think, the speech rate will be higher.
I can give a demo test also if needed to prove my accuracy and efficiency in transcription. If I get to listen to audio first, we can reduce the turn around time also.