In my humble opinion it is often just easier (and more rewarding) to fix these little things yourself. There is step by step information on the forum for nearly everything you might eventually need to work on. You'll gain experience working on the car and will know that things have been fixed correctly. While you're inside the map light, replace the OEM bulbs with some superbright "white light" LED bulbs. Water intrusion into the trunk well will most likely be found to be from around the rear spoiler mounting plate. Be proactive and fix it now. I guarantee it is leaking there.

Just sayin' . . .