Could you get their attention by saying 'are you here?' and if they reply, then can you tell them that I don't cheat? I just don't like it when people are gonna generalize that my clan are cheats, doesn't look good at all, take a look at BCT   

OBi-Wan...After reading this 3 or 4 times...This is my opinion only.

First... it takes a player with a certain amount of knowledge to correctly identify a hacker and in a lot of cases
is a judgement call at best.
There are individuals  who do call out good players for rule violations Incorrectly , it's a ongoing problem and almost impossible to control .

May I suggest to you, a more serious response when responding to a player who is accusing  you of cheating.
For example... I am not cheating... PLEASE TAKE A DEMO.... or...I ENCOURAGE YOU TO TAKE A DEMO and submit it for review.
Leave off the.. LOL.. at the end of your response ...You probably will come across as being more serious and convincing... less indulgent to argumentation.

Again... this is just a suggestion and my opinion.

G'day striker, yeah I probably should leave out the lol... I did tell him to report me but all he replied with was 'nah' so I don't know what to make of that

As I've stated many times, the bigger problem we have on our server is false accusers, not actual hackers and spawn campers (Not that we don't get them at times, too).  When FH admin are on we try to politely remind them not to accuse and if they continue to be disrespectful we can warn and/or mute.  If no admin are on, it appears you handled it as we would suggest.  Politely, calmly ask them to feel free to submit a demo to our forum.  If they continue on, like this guys did, I would just ignore it and play on.

another option which I like to do.  is record.  also helps to use a webcam or camera facing screen as well.  then when get accused, I usually tell them as stryker said, feel free to record me and submit the proof while I submit a recording from me end.  and I do.  then they have no room to talk. 

if they are not going to record and get proof and submit to get players banned then they are the problem. 

it would be nice though to also temp ban those who continue to accuse?  if they are not going to gather the proof like the rules state then they should be temp banned.  to me its disrespect to accuse, especially for WH if you cant prove it. 

For some of our extreme accusers we have temp banned or muted for a long duration.

Obi-Wan - I spoke to Surr in game this morning about harassing players.  Let us know if it continues

surr didn't seem to know what to do when people were explaining stuff to him in a friendly way! until he got annoyed and STARTED TYPING LIKE THIS