Henrik,

call visa and tell them of your problem. they should be able to cancel the
payment which should get the companies attention.

It'll get them more than a slapped wrist.

They can have their merchants facility pulled.

Give them a final warning by snail mail and send it registered so it
will have to be signed for.

Good luck
--
Philip de Cadenet
Transmitters 'R' Us
http://www.transmittersrus.com