XRAY - Model racing cars

I have a 13-Inch Mid-2012 MacBook Pro. Last week it wouldn't charge. My charger was all ripped up and beat up but still worked then one day it just stopped so I figured it was that. I then got a new MagSafe 60W charger next day Aired from Amazon. I plugged in the new charger and my MacBook booted back up. It was working fine but then a few times throughout the week my MacBook would stop charging randomly or when I would plug the MagSafe back into the MacBook it wouldnt charge. So I would unplug from the MacBook and wall outlet and just shake and bang on the cubed adapter part a little bit and it would start charging again. This happened probably about 5-6 times in that week but last night it just stopped. It won't charge at all. I've done everything from unplugging to checking pins in the MagSafe to resetting the SMC and nothing will work. Is there anything else I can do before I take it to the Apple Store??? Need help asap please