Internet Cafe Hotspot Billing management Software

Need Internet Cyber Cafe /hotspot Billing Software to manage cyber cafe chain. Conditions: 1) Should run on SQL server database 2) You must have developed internet cyber cafe software and now in use 3) Show me example of such software you have developed This is not a project to re-invent the wheel, perhaps customize existing cybe billing software to meet my needs I need very simple system, no POS or Restaurant etc DO NOT BID IF YOU HAVE NEVER CODED **CYBER CAFE BILLING SOFTWARE BEFORE*****. I WANT SOMEONE WITH PRIOR KNOWLEDGE.. YOU NEED TO SHOW ME PRODUCTION EXAMPLE OF SUCH SOFTWARE IF YOU CANNOT, YOU CAN REFER ME TO A DEVELOPER HAS DONE SAME JOB BEFORE HAPPY BIDDING THANKS