This greyhound is trouble. I've met one manager who was intelligent enough for their job, but everyone else here is probably just gathered up from the streets. First of all, plan to arrive at your destination one hour later than what was advertised... In the last month I've had two occasions where the drivers did not know where in the destination city the greyhound bus station was!
I have no other means of semi-affordable travel therefore I have to use their service frequently. In my travels, I've been directed to wrong buses by the clerks and insulted by the ticket officers on different occasions.
Apart from waiting a whole minute between taking my information and not listening to what I'm saying, yesterday when I asked them about what times are available for travel, the clerk at the ticket office replied "I don't know".
Yeah, avoid greyhound if you can...