Can anyone recommend a hosting provider who is conversant with Adobe Muse?

Hi, I need to upload my Muse site http://www.bilyz.com to a recommended hosting provider.  After months of circuitous emailing with my current hosting provider they have at last confess that they are unfamiliar with Adobe Muse.  The FTP upload worked initially but I have been unable to upload modified files and would appreciate learning of a tried and proven host that also provides good support.  When I telephone my current supplier I am told they are receiving an unprecedented high number of calls and that I should raise an enquiry ticket via my control panel.  Then I wait weeks to receive an email (that doesn't accept replies) from some person who obviously has not read my enquiry ticket message.  Naturally, for reasons of telephone costs, I would prefer a UK host.  Looking forward to your advice! Kind regards