PAYING FOR SECOND HAND PHONES

I RENEWED MY 2 CONTRACTS LAST YEAR AND TOOK BLACK BERRY PHONES. WITHIN 3 MONTHS BOTH PHONES GAVE ME PROBS IT USED TO JUST SWITCH OF AND THEREAFTER IT DIDNT WANT TO CHARGE I TOOK IT TO TRADE ROUTE THEY TOOK PHONES IN. ONLY TO DISCOVER THEY GAVE US REFURBISHED PHONES THAT WERE WORST THEN THE ORIGINAL ONES. I AM PAYING A CONTRACT FOR NEW PHONES HOWEVER I HAVE 2 REFURBOSHED PHONES. THE PHONES ARE CONSTANTLY GOING OFF AND YES THERE IS NOTHING WRONG WITH BATTERY, NOW THE ONE DOES NOT WANT TO CHARGE..WHAT DO I DO..TAKE IT BACK RECEIVE BAD ATTITUDE AND REFURBISHED PHONES...I AM NOT PREPARED TO PAY FPOR SECOND HAND PHONES THIS IS UNFAIR WHEN WE COMPLAIN TO STAFF WE GET ATTITUDE. THIS HAS BEEN GOING ON FOR MORE THAN A YEAR AND NO SATISFACTION