Systems and methods are provided to facilitate repeated purchase and payment transactions. In one aspect, a system includes an interchange and a data storage facility configured to store payment transaction records associated with phone numbers. The interchange includes a common format processor and a plurality of converters to interface with a plurality of different controllers of mobile communications. The converters are configured to communicate with the controllers in different formats and to communicate with the common format processor in a common format. The common format processor is configured to identify a prior payment transaction associated with a phone number in response to a message from a mobile phone having the phone number, communicate with a merchant to repeat a purchase according to the prior payment transaction, and transmit via one of the converters premium messages to the mobile phone to collect funds for a payment to repeat the purchase.