ive had my blackberry curve for 8 months and for the past 3 months id be in the middle of typing a messing and the cursor would start scrolling up or scrolling down and glitching. It didnt realy matter to me at the time cuz it only happened 2-3 times a day. but now the trackpad wont do anything. it wont move up or down and it wont push enter which makes my phone useless. can i fix this or do i need to call the phone company?