How can I buy the proper bus ticket?

They build here in Addis 20-storey hotels but they do not have the bus terminal for travel to their provinces… I recognized that on the corrner of Meskel Square near Estepanos church many intercity bus companies have ticket-selling agencies located in the poor shacks. Nowadays quality Selam Bus do not go to the north where I am heading because tribal tensions so I was looking for Valiya Bus. I found 3 young ladies in the shack… – I need a ticket for Monday’s bus to Waldia! They did not speak English. I used the calendar, pen and paper to explain. I got a ticket for 478 birr. But the date on the ticket was completely different – they still use traditional Ethiopian calendar. uuu. Where is the time of departure? She said: ten. -Ten o’clock in the morning? Yes, but Ethopian time! Ufff, confusion, the time they use is 6 hours ahead of international time for this zone! So i will be departing at 4 am!
I switched on my smartphone an they showed me on the map parking in front of Shebelle restaurant, near Mexico junction. We will see if it works! 🙂