Ozzy

I accidentally left my afterkamrket radio on, and the battery went flat over 2 days, so had to charge battery, it worked for the first couple hours but very slowly and then it just got slower and slower and now won't work, help me 😫

Battery went flat so we jump started the car. After following the hand book neither windows work and stuck half way down. The windows were a problem but always worked with the key. Any ideas guys?? I'm desperate, as the car hazards keep flashing now and battery is obviously flattening!!!!!!!!