Blackberry curve 9300
Key pas and head phones

I have bought a new handset hanset off blackberry model 9300 curve i purchased it last 2 months later and the time i bought the key pad its not working properly and they have given me a duplicate head phone inside after using it for 2 months now its not working i went to the service station they are asking me to pay for the service and asking me to buy the new head phone please ask them to exchange for me please its under warranty for 1 year my e mail id is [email protected] and contact no is 09823665694