Response to feedback automatically posted not by me?

Hi, Im wondering if anyone can tell me why my account is automatically posting a response to any feedback I get after a sale? Somehow it is automatically posting the title for the sold item by itself as a feedback response after a buyer posts feedback (I have not touched anything).  Ive contacted trademe, and they have not had any suggestions as to why this may be happening and no real solutions apart from clearing my web browser and aps cookies, both of which I have done repeatedly. If anyone can offer any advice, it would be greatly appreciated.