My site is under attack (http flood)

Recently, my website was attacked for three days and now it continues. Main countries of Asia, Romania, Slovenia. I'm using semi-delicate at hawhost, they changed my IP hostname twice (nullrote) and today, they said they could not host my website, my site abusing their network resource. Now, I do not know where to go next? Can you help me suggest offshore hosting services for support service customers who do not abandon them when they are attacked?