Isn't work fun!

I create reports for departments at work. I use data that is pulled together from several systems into one database over night. Lately that data has not been finishing until after 9AM or 10AM where they used to finish around 5AM to 6AM. So now we have people all over the company complaining and bitching to us how our reports are not coming out "on time". Of course, we need the people that run the database to get the data for us so we can’t just throw them into the fire. We are left to smooth things out all the while the team pulling the data is blaming us and the requests that we have made of them as the reason the data is late. When we do complain to them they give us the run around about how someone running queries slowed the tables down; and they want to look at our queries so they can make them faster. They never want to really look at the reason the data is out late, they just point fingers and put the focus somewhere else. Makes for annoying days at work; not stressful because I believe you have to feel some sense of being overwhelmed for stress and sitting around looking at websites until the tables are finished does not cause much stress.