This one always boggles my mind. If a site doesnt have a direct number to contact customer service or email why in the world would you give them your credit card number or bank info?
Would you shop at Amazon if you couldnt call a customer service agent? Lowes, Best Buy, etc....
Easy rule of thumb. If they dont provide a phone number for customer service and only provide an email address then write the email address. If they dont return your email within 48 hours, then dont give them your credit card or bank info. Simple as that. Any reputable company provides that info. Why should dating sites which are selling you a service be any different.