I completed 2 surveys in 2 days and wasn't given my credits , after waiting 2 more days I contacted WGT and they responded quickley to tell me how to sort my problem with TrialPay. I went through TrialPay's support link and filled in the information as best I could and 7 hours later a had a email saying all is fixed .............and it was.
They even paid me for one of the first surveys I did , which I didn't tell them about cause I thought I did something wrong and put it down to experience and forgot about it.
Best customer support I have experienced