Briefly:
Money type: SMS.
Balance refilling:  immediate.
Way of payment: sending SMS to short number from your mobile phone.

In detail:
You make payment by sending SMS from your mobile phone to the short number. The text of SMS should contain: first 3 symbols is a "textual code", then "gap", then "seven-place numerical code". The exact text of the SMS and the number to which you should send the SMS will be shown in a new window, after you choose this type of payment from Balance section.

Example: "dam 1234567" on number 4461.

After successful SMS sending you should press "Next" in the payment window. Your balance will be refilled immediately. The SMS cost depend on the country of its sending.

Pay attention! The balance refilling will be made only in case of a correct request. Failing the right request, the money will be anyway written off from your account. The user is personally liable for the correctness of inserted data.