Has anyone else had this problem before?

The only thing I did today was complete the quest to obtain my pair of Runeist Trousers and then went AFK for hours while I ate dinner and watched House of Cards. When I came back to play, I discovered that, at some point between then and now, I had been suspended.

The email that SE sent me said that they had investigated me for something that I apparently did TODAY... "Cheating and Botting", it said. I don't use third-party tools, other programs or anything like that... I don't even use Windower. I don't know of any exploits that I could have even taken advantage of. All I did was one quest and then went AFK for hours and hours. I honestly cannot think of a single reason why I would be eating a 72-hour suspension right now.

I sent a email asking for details regarding this issue, but I highly doubt that I'll ever get a response. Has this happened to anyone else recently?