Samsung Galaxy Ace — manufacturing fault

Address:

Jammu and Kashmir

Sir,
I javaid wani R/O Qamarwari Srinagar jammu and kashmir has purchased samsung galaxy ace mobile handset bearing IMEI [protected] ON 17/02/2012 From purchasing date to till date there is lot of complaints in my cell phone complaint logged so many times but not respond.Dear sir now i want to know weather it is a manufacturing fault or something else i have uploaded new software but the same problem persists tell me what should i do should i replace it with a new one or get repaired
With warm regards
JAVAID WANI
[protected]