Hello, I have a client who own a call center and is dialing for tech support in United States. Earlier he was working for some third party client from Singapore but now he wants to do on his own, so he hired me to set up a website and payment gateway for his company. Now I would like to know what payment processor is best for such service? Is there any reliable payment processor who charges nominal fees for processing the payments? Also is there any service that processes cheques digitally? without their physical presentation in banks? Thanks in advance P.S: Payments will be withdrawn in banks of United States only.