Charger won't stay in

The charger keeps falling out. I've tried blowing compressed air in the port to clean it. Didn't work. Also tried a wooden tooth pick and again still falling out. I've had the problem for awhile and it's getting worse and worse. It's an Australian phone so don't have the option of wireless charging. Any other ideas for fixing it? Or should I just take it back to where I bought it and let them deal with it?