lunar solar?

I have a Lunar Solar with the worst designed bathroom wash basin unit I've come across.... no pipework access. Its a very ' long shot' but describing best I can its a three cupboard corner unit taps to right facing, basin spout is shower head with extendable tube which i think has come adrift from tap assembly.
Can anyone who has same model any idea how to get to tap pipes.? Well did say 'Its a long shot'