Do you use the Ubuntu image from here: http://forum.banana-pi.org/t/bpi-m3-new-image-ubuntu-mate-15-10-for-bpi-m3-20151203/817
There's nothing written about working BT, maybe they forgot to activate it (like they did with other drivers). Which kernel version is your image using (full output of 'uname -a')? And why do you want to throw it into the bin since you can get a full refund if it's not working as promised?