Question : Problem: i-mate JasJam Call Tracking

if some body same i-mate JasJam IM number can he track the calls.

or

is there any posiblity of hacking if somebody knows my IM number

Answer : Problem: i-mate JasJam Call Tracking

Your Billing information.

There was a story where someone got through Customer service by just giving the imei and obtaining the information of  the person. But its unlikely now because they will ask you personal questions before giving the information out.