Security system not working properly

I have a problem with my car listed above LE model's car alarm system. It had after market alarm system in my car I already took off the wire and stop alarming.I had to use my keys in order to open my door without using the remote and it work for entire day until next day. I use my keys to open the door and the car start alarming again using my keys. I could not use my aftermarket car remote since I already took off the wires for it. The car would start alarming and wont stop and wont start. I have tried many methods in order to stop alarming. I have already replace car battery and all the stuff I found online. Is there any way to solve this issue or I'm using the method wrong?