My Forum is under attack, this whole afternoon until now.. still recovering on it.
Now I tried to purchased one of their plan, paid for it.
Some of their staff called me on Phone, the deal is OK.
But all of a sudden, I got mail saying I have refunded and they cannot accept and process my Site.
I keep on asking Why? Whats the reason?
They don't even answer me.
I second that. I got there superb support.
If you are under DDoS all the time, I would also look for a host that offers Radware services (I had it for $10/month, but it depends on how much GB of data you have).
Litespeed can also mitigate DDoS attacks (if configured properly).
Yes Wiredtree isn't an Anti-DDOS provider, so it's normal for them to not accept such a site if they knew in advance. Most web hosts who are DDOS mitigation specialists won't accept you or even if they did, would probably ask you to leave if DDOS attacks are large and frequent.
If you're under DDOS attack you need to look at a DDOS provider like blacklotus, staminus or business and higher plans for cloudflare or incapsula.
But if it ain't DDOS related, the other possible reason Wiredtree didn't except you is you failed or triggered their internal fraud checks. Most web hosts have them and they never reveal to the rejected client the reason either.
While browsing WHT came across this offer http://www.webhostingtalk.com/showthread.php?t=1293751 might be what you need. Never used Limestone before myself but upto 10Gbps/6M PPS protection for addition US$25/month for their dedicated clients sounds good. Seems they resell or partnered with Blacklotus for DDOS so solid stuff I suspect