I am looking for professional help to integrate credit card payment gateway with A2billing. The most important feature we would like to add is to auto refill the account with certain amount every time the credit reaches to a certain limit as defined in the customer profile the same way it works for "CREDIT LIMIT NOTIFICATION" in a2billing. Customer/Admin should be able to define the threshold to trigger the auto-refill process. Also, it will be nice to have an option to choose the preferred gateway by the customer/admin for that payment.
Based on the quotation for above task, we may as well be interested to add "SMS" feature to customers account.