so you want to be paid without offering service first,how is that possible ?
If you can't pay upfront then escrow the fund you want to use through promotion.
fund is currently with payza and will have to exchange it to bitcoin using bestchange.com, any exchange from payza will have to be approved manually by their admin which may take 1 to 5 days during business days, this is part of their ToS. Anyone will to do the job will surely be paid. Thank you