WAIT! Keep in mind sometimes Your inbox is full and upcoming messages are kept on hold until You free some space. I once didn't know about it... and I've been waiting for a response for long enough to assume someone ignored me. So...
Please, check if there is no on-hold messages before You throw this stuff out. Also... it might be the guy has net connection issues and he simply CAN'T log in.
BTW, a little more patience would be OK. TifaNazah hasn't replied to my message since Winter. Does it mean she ignored me? No. So it's no problem for me to wait for her response till next Winter.