Au why couldn't they? It was about 2 months ago, I stayed in the "Tuk Tuk Hostel" in Phnom Penh and ask her if I can print the visa application, then she offered me to let her friend do it for me, pay 4$ and I just gave him my stuff and a few days later he came back with my visa, in that time I could see Phnom Penh and didn't need to take care about it