Interesting.
Take a look at BlockGirl's name history.
Name    Last Seen 
BlockGirl    2016-02-05 02:50:46 
Blockhead22661    2016-01-24 16:11:04 
Terminal    2016-01-12 05:38:18 
pokemonlover    2015-09-06 18:26:43 
Whale stuff    2015-08-17 09:16:58 
Teh Pope    2015-07-18 04:10:53 
Walmart Shopper    2015-07-04 20:11:38 
Teh Pope    2015-07-04 00:45:41 
FishOilTablet    2015-04-12 18:08:31 
ConsoIe    2015-03-18 01:58:07 Bolded important things here.
Here is the same person, as FishOilTablet:
FishOilTablet - ddosing cuntHere is the ID that they named themselves after.
ThatBlackCop, ID 22661, petty DDOS
From a drama about ThatBlackCop (
Source)
Here are their IP addresses:

HAHA I found something even more interesting after going through evidence again.
Take a look at 22661 (ThatBlackCop)'s name history.
Name    Last Seen 
Blockhead22661    2015-04-09 18:53:18 
LolCatzCo    2015-04-07 16:34:00 
The Shirtless Thief    2015-04-04 07:00:32 
MERP Player    2015-03-30 12:53:14 
JeremyGermst    2015-03-27 00:00:35 
Jeremy G    2015-03-15 11:08:49 
Germst    2014-09-01 22:13:04 
Blockhead22661    2014-08-29 20:38:53 
Germst    2014-04-01 20:46:07 Bolded notable things.

(
Source)
Germst / ThatBlackCop has been associated with DDoSing before, and is also close friends with the infamous Fen / Custardo who has been known to abuse exploits to crash servers.
TL;DR These are the people that swatted you.
IP Ban / Ban them from your servers.