So lemme get this straight.
You're friends (or was), he goes away for a while.
He came back and goes on BL at random times.
He asks for the bugged/un-finished Drugmod.
You say no and he is mad.
Next day, you have no SA but he says "you'll get it back by giving me the drug mod"
You said you'll fix it and you get SA back.
Next day, you're banned, he's blocked you.
Ouch.