phone not repaired & they pinning the fault on me

I purchased a BB9720 on contract from Game Vosloorus in December 2013,the charging port failed after a few months,sent the phone in for repairs and the phone was repaired as it was still under guarantee,two or three months later the phone suffered the same <a href=\#"id=\""_GPLITA_7\"" [URL Removed] title=\""Click to Continue > by SaveItCoupons\"" style=\""border: none !important"