Web Hosting troubles....what to do?

[big_pete]

As some of you may know my website (bigpetedesigns.com) has been hacked into. :jab:
very annoying indeed, when it happened i emailed my hosts (serverseed.com) regarding what to do etc etc.... no reply...this was repeated on at least 3 occasions with nothing back from my hosts.

so i decided bugger this, i need new hosts.
so i went off and found some great new hosts with top notch customer service (flexihostings.com.au)
they were great, before i signed up i asked if they would be able to transfer my domain name (bigpetedesigns.com) over without me contacting my previous hosts....they said yes they can, i will get an email asking me to approve the transfer once i sign up

so i sign up.

it took a few days for payment etc to go through, and then a few more days and no email to verify, so i email them, they say i need to 'Unlock' my domain name with my registers (serverseed)

so this leaves me where i am now, ive sent about 4 emails to serverseed trying to get them to unlock it, all with no reply.

What can i do?

my new hosts say they have done all they can, and in general have been great.
it just feels hopeless.