Sorry, but you cannot lose what you never really "had."

This has happened to me too! (although not with the same member that banned you)

Sometimes it is by mistake or accidental.

I had a look at the profile of the "lady" in question, there are no visible images or "member`s recent comments" which can indicate a possible fake account.
Secondly note well what the big gentleman correctly stated, firstly that it may be a male posing as a female which in fact is quite common, secondly you need to assess what you may have said in your messages.
For example if you sent something like this to the member in question most of the respectable ladies of the group would have banned you without hesitation, "Oh, would love to place my nose near to your ass hole, take the sexy smells for hours then give you awesome rimjob through my wet tongue...you damn sexy!"
Need I say more.

Being nice can get you banned also. Even giving to much of a good compliment can get you banned. I'm not going to stop being nice to women just because one decides a compliment is not sincere. Don't take it to heart you can't please some people no matter what you do. I think the best thing to do with that person is just take them off your friends list and leave them alone. Being banned by someone only means they didn't like you or you pissed them up about something. Just be nice and if they can't take it fuck-em, devote your time and effort to someone who appreciates it.

could have been something you said, or she is fucked up... or maybe, she is a guy that lost interest! haha!