Tradus now can be contacted only via their feedback form, which rarely goes through and most of the time just hangs.
They do have a phone number which receives calls: 0124 6777005. Another number is: 0124 6749000 which will give you the earlier number.
See this webpage for their physical address and some other numbers which will again will forward you to the one above http://www.customercaretalk.com/tradus-in-custo…
All the best.