Speaking at the launch of a documentary film about Wonga customers, the firm's chief operating officer defended the service against critics he described as "prejudiced".
"What we're trying to do here is ask people to look at our customers," Niall Wass told ITV News Business Editor Laura Kuenssberg.
"We've done a snapshot of a million active customers, 90% of whom would recommend us to friends and family."
He said Wonga's critics too often "jump to conclusions without looking at the facts."
More top news
Voters in part of London have reportedly been turned away from polling booths due to "problems with the lists".