They respond quickly if it costs them, or they stand a chance of being brought to court over it imo.
Otherwise if it's player vs player, or about exploits, glitches, or anything that can be abused that doesn't directly cost them... dont expect any response at all.
Just using the map spamming exploit as an example... I took multiple video's, or multiple avatars using this exploit. Once we learned how to recreate it, we even made a video of that to send in.
MA just says thanks, we'll look into it... after noticing the lack of bans being handed out, I asked is it ok if I use it since you guys seem to be allowing it? MA says "if you think it's an exploit, then thats cheating, so no"
Needless to say, almost a year down the line they quietly fixed it so that it no longer works. No announcement of it, or anything like that, and this issue has been in this game since space came out I think. But only when other folks that weren't interested in hording the secret blew it open and everyone knew how to use it, did MA start working on it. And they had to be shown how it was done.
So... If your question to them is about getting money in the game faster, they will respond quick. If your ticket is about anything else.... I wouldn't hold your breath