Exactly. Coaches wouldn't make comments like this if they weren't weekly occurrences. Coaches know better than fans that the refs aren't going to get everything right all of the time. They miss calls. They miss egregious calls. Its nothing personal, its just part of the game...
... except in the SEC, where it seems certain teams get certain calls an inordinate amount of times. If it didn't happen over and over coaches would bite their tongues and curse their luck, but because its obvious to everyone that something needs to change its hard to back Slive on this one.