you can test for a drain yourself. get a cheap 12v test light from somewhere like harbor freight. unhook either cable and hook light between battery and cable. make sure all doors are shut and everything is off, the light might light up bright for a second or two but then should go out of go real dim. if it stays bright then you have to start pulling fuses and relays till it goes out then find what circut is causing the issue. another thing you can do is after you drive to to work or home unhook the battery and see if it will start later when you hook battery back up. if it still starts after that then your battery is good and you have a draw, if it doesn't start you have a bad battery