BOOKING SCRIPT - Fix error, intergrate and customize.

NEED PROGRAMMER THAT IS WELL SKILLED IN BOOKING ENGINES. !!!!I WILL PAY IN THE END, WHEN THE PROJECT IS DONE!!!! If the job will be well done more cooperation will be feasible in the future. I have a car rental booking engine that is collapsed and I need fast service. Today would be appreciated. 1. First I bought this script: [login to view URL] 2. Then my ex programmer made some customization. 3. After that I bought two customizations from [login to view URL] and they do not want to integrate it cause of our customizations. i: The first customization was to be able to change price on each type of vehicle based on season. This customization works fine but if booking exceeds two seasons the price for the first season is used in the calculations. This has to be fixed and then integrated to our script. ii: The second customization was to be able to block cars to be able to decrease our fleet in low season. PHPjabbers misunderstood us and made feature to block the entire fleet. This has to be fixed so we can block car based on seasons like this: Vehicle 1 - Blocked from 15.09.2012-20.2.2013 because it is possible to unregister car and decrease insurance cost. 4. Now the availability in the script is collapse and the system overbook cars. One car is booked twice instead of book new car or inform customer that we have no car available for this period. Need somebody that can work on this FAST! If more information is needed, send me messages.