Acer Aspire 5733 — USB IS NOT WORKING

Address:

Madhubani, Bihar

I had bought a Acer laptop which details is below on 16/10/2012
Serial No : NXRN5SI[protected]E11601
Model : AS5733

USB port of this laptop is not working from the date of purchase I had complaint about this problem the send their technician to me but he was unable to solve the problem he said that perticular part have to change but he didn't change the part and I have to face the problem till now.