In general (and all of the following is "in general", there are hundreds of missions (and mission presidents), tens of thousands of missionaries, some differences exist between missions, but the following is generally true across different missions), a bishop is not in the chain of command for full-time missionaries, who are instead directed by the Mission President responsible for that mission and the 100-200 full-time missionaries working in it.
Basically the only information that persists between sets of missionaries (who generally rotate out of an area every few months) is the "area book". The area book is usually just an 3-ring binder with brief notes about who the missionaries have been teaching in the area recently, including less-active church members they are encouraging to return to activity, and
maybe a map marked with where they've gone knocking doors recently. That way if both missionaries in a set are rotated-out at the same time, the incoming missionaries will be able to know what's going on. Said notes rarely persist past a year or so, even 6 months is elderly for a lot of it.
Certainly the church members in the congregation in your area also can tell the new set what's going on, and the bishop (who generally only serves as such for 5 years or so) could say "don't go to that vaskidmark's place, the guy's a real jerk!", but the missionaries would not necessarily be beholden to that. It is certainly possible for a mission president to specify a person or location off limits, but that would be pretty rare and not generally done in a situation you describe because there is no shortage of people that like to try to mess with missionaries' heads. It's just part of being an LDS missionary.
Even if the local bishop there actually told you the missionaries weren't allowed there any more, it's unlikely that's actually the case. You not having seen missionaries for a long while is most likely a combination of two things:
1) Missionaries don't knock doors as much as they used to. It's just not terribly effective. We would only go knocking ("tracting" in the missionary parlance) if we had some time to fill and didn't have contacts at the time through more effective channels (i.e. people that had actually requested to meet with the missionaries, etc.), and that was 15 years ago, other avenues are emphasized even more now than then. It's definitely still done, and I did find the occasional person receptive to the gospel via tracting, but it's just about the least fruitful activity a missionary can do.
2) If the missionaries have been "told about you" they've likely only not come as a result, not because they were prohibited, but because you'd be wasting their time. It's actually a fun occasional change of pace as a missionary to talk to someone like you; to have a debate with someone knowledgeable about scripture or our doctrines or our history, or talk to someone that does things like call the it the Book of Macaroni, or ask how many wives we have back at the homestead. But time spent having a discussion with them takes away from time spent talking to someone that actually wants to hear our message and is receptive to it, and
most missionaries aren't going to spend a lot of time talking to you if they
did run into you for the same reason.
But missionaries are people too, and there's bound to be one whose love for a good debate is stronger than their focus on the work (fits a couple that I worked with), and would probably head right over if told about you. So don't worry, I doubt your head-messing days are completely over.
