A2Billing customer UI customization & Integration

I have 1.9.4 (Cuprum) version of A2Billing running that works perfectly. I only need a very good looking Customer UI that looks nothing like the standard a2billing's. I will provide a few website examples for what i need mine to look like. ONLY BIDDERS WITH PRIOR WORK COMPLETION ON SOMETHING LIKE THIS ARE WELCOME & PROOF OF SUCH IS REQUIRED. The customization must support future upgrades. The following deliverables must be delivered along with the customization: (1) CUSTOMER PAYMENTS VIA PAYPAL ADVANCED, [login to view URL], GOOGLE CHECKOUT (2) CUSTOMER PAYMENTS VIA IVR (IVR menu initiated via a customer call into the system & also when customer credit during a call falls below a certain minimum - say $0.25.) (3)CUSTOMERS MUST HAVE THE ABILITY TO SUBSCRIBE TO RECURRING PAYMENTS (e.g add $5 when balance falls below $1.0) (4)THE CUSTOMER PORTAL WILL NEED TO BE SEAMLESSLY INTEGRATED INTO EXISTING WEBSITE.