My hp slate 7 2800 don't charging what's the problem

I have only had my HP SlATE 7 FOR ABOUT 6 MOS. AFTER INSTALLING ALL THE NECESSARY EMAILS AND PROGRAMS i NEED AND MY PHOTO'S OF FAMILY..... IT STARTED TO GIVE TROUBLE CHARGING WITHOUT HOLDING THE PLUG IN THE RIGHT POSITION OR EVEN SETTING IT ON TOP OF SOMETHING TO HOLD BALANCE. I THOUGHT MY KIDS DID SOMETHING AND HAVE BEEN UPSET WITH THEM SINCE. THEN I TAKE IT TO THE ONE AND ONLY STORE THAT HAS ONE TECH THAT CAN REPAIR SLATE'S AND EVEN HE CANT FIX IT HE SAYS. HE WORKS WITH MEGABYTE HERE ON GUAM (WHERE I AM SCREWED TO GET ANYTHING FIXED) AND HE SAYS HE CAN'T GET PARTS TO FIX THE PLUG. BUT HE KNOWS THAT IS THE PROBLEM. EVEN WITH WARRANTY THE BASE PERSONEL COULD NOT HELP. WHAT THE !&&* IS THIS. WHERE DO WE GO. I AM ABOUT TO SEND IT TO FAMILY IN HAWAII BUT IS THAT EVEN GONNA HELP. SOUNDS LIKE HP KNOWS EXACTL