From my experience with advertising networks:
- If you requested a payment and did not receive it in 2 h, do not panic (there are situations where it took 2 days for a transaction to be confirmed).
- If someone does not respond to an email, do not panic (it is possible that the site owner is busy with something else, or not have seen your email).
Not all websites have a dedicated support team

i have sent email about a month, not 1 or 2 days. Maybe coinmedia has problems with some email provider like hotmail etc, but the owner never responsed to my emails.