The number you are looking for is on Tuxedo website's
contact page.
Quote:Customer Care
0845 241 4276 or 020 7101 6598
09h00 – 18h00 Monday- Friday and
10h00 – 16h00 Saturdays (from overseas dial +44 20 7101 6598)
24 hour Account balance: 0845 225 0043 or +44 20 0101 1105 if overseas
24 Exchange Rates: 0845 225 0043 or +44 20 0101 1105 if overseas
Lost or Stolen Cards: 0845 241 4278 or +44 20 7101 6599 if overseas
Please follow a very nice man's advice and provide basic information like it's a credit card, the website address and so on. This is explain in the instructions for posting a request. Also, in this case, you could have found it yourself and added it to the database without posting a request.