Hi
It seems the best way to resolve this is ask the IP registrar (the company from which the domain name www.thaistarshipping.com was bought) to assign the IP to ZIM website.
(IP: 91.235.35.36) we will be able to do the rest from here.
You can see the registrar info here:
http://whois.domaintools.com/thaistarshipping.com
Please coordinate this issue with them and let us know when can you do the reassignment of the domain.