Decent Alarm, Not Programmable

I purchased and had installed a CS752A alarm. I'm not too happy with the fact that when you unlock the doors ALL of the doors unlock at the same time. It would be nice to be able to reprogram the system to unlock the drivers door alone and if possible unlock the rest of the doors. I consider this a safety issue. Sometimes you don't want ALL the doors to unlock at the same time. My understanding is that the Toyota cars have the system programmed to what their car is already programmed to do. For some reason my KIA is not. The shop where I had the system installed did not know the answers to these questions and I couldn't get in touch with an actual sales person from Compustar to get any help. Customer Service never answered the phone. I was left on hold for more than 30 minutes. I really wanted to talk to someone about this issue.