How can I easily fix the charging port?

My brother broke my tablet's charging port while he was unplugging it, and now it's really sensitive. I have to have the charger positioned exactly the right way, then I have to prop it up on something (like a pencil), and I have to check on it every 5 minutes to make sure it's still charging. And I found out that its actually losing battery power (last night it had 40%, but now it has 28%). It's really stressing me out and I need to fix it somehow. Is there a simple way to fix it without taking my tablet apart? I know that the problem isn't the charger, because I tried using a brand new one and it still doesn't work. I also can't afford a professional repairman or a new tablet. How can I fix it?