Cadillac 2006 srx not starting

I did have anti-theft issues before, my key would not come out of the ignition, so someone had the bright idea to try and pull it out. Well all that did was shut the entire system down and now I have to manually remove the key. After that happened and it got a jump it was ok for a few months, then all of a sudden stopped working....It sat for a few months till I could afford to do anything, I just had all of those parts previously mentioned replaced...I still have to check fuses and spark plugs yet...something is draining the battery also, because it keeps dying and it was bought a week ago today...Im trying to do this without having to go to the dealership, its already costing enough...thank you for your reply, theres been multiple people who have looked and given there advice, so I was trying to find someone who knew more about this kind of vehicle.

Yes, I apologize that I do not have specific experience with this vehicle that can help, but any way you look at it, you are entirely aware of the circumstances that occurred regarding removal of the key in the first place, and that is where I would focus my attention to. The original cause of failure, the new damage caused by forced removal. With vehicles these days, you simply can't ignore the functionality of electrical components, features, accessories. It's all intertwined with other functionality. Everything must be restored to original proper working condition. I'm sure it's frustrating from a financial point of view, but it doesn't change the needed outcome.