Juni's papa - Vasea used to bite also, when he was very young. We tried absolutely everything, but more agressive the approach, more agressive he was. So, we understood and we tried to leave him when he was upset or agressive. But, the hanging things desease stayed forever.
We also tried the trick with biting the tail or the paws, works with some cats also, but they surely understand, that they bite hard.
Juni is also very happy when we come home and I suspect that she is lonely all day long, but we try to compensate it in the evening and in the morning.