[SL keeps reblocking someone every time I relog. I don't know how to fix it!]

I blocked someone a few months back. I have tried unblocking them since. I have sent them IMs and even went into preferences and unblocked them. Yet everytime I relog it reblocks them and I do not know why!!!! 

[I AM A PREMIUM MEMBER I CANT SEE THE LIVE CHAT OPTION. I HAVENT BEEN ABLE TO TELEPORT IN WEEKS!]

I am a payting member of this game, i havent been able to use live chat, i just dont see the option anymore. I havent been able to leave my SL home in weeks, evertime i try and TP i crash! I have tried detaching everything and clearing my cache! I really want these problems sovled ASAP!!!!!!!