Thats why some of the guy prefer signature campaigns having a nice and fair campaign manager and with escrow. I hope from next time you take care chosing. Don't start up advertising unless you are assured and satisfied that you will get paid.
BTW any message you got that they are denying your payment when you sent them a message.Got it now.I think you should get payment for first week if you completed advertising period.Though there is no rule regarding denial of payment in such case as yours. However would like to listen from liqui himself. I will PM the signature campaign manager and would ask to answer up here.
Also put up a space between ":" and link in the main OP so that it shows as a link.