1 ASHBEE HOUSE BATTLEBROOK DRIVE CHIPPING CAMPDEN GL55 6JX. THERE IS A SALES LANDLINE NO 01386 841122 AND 0845 1284311 BUT I CANNOT GET THROUGH TO SPEAK TO ANYONE IN AUTHORITY. I AM FED UP WITH THE SALES DEPT WHO ARE FOBBING ME OFF.

As that's the only number I can find for the company, on a quick search at least, I suggest you call back tomorrow and simply ask to speak to the manager.  (You may find there are Sales Managers, and Accounts Managers, so pick whichever you wish.)  Don't go into details with the person who answers the phone. 

Another tactic is to just ask for their name, then later on, call back and ask for them by name - most people will put calls straight through if you ask for a particular person.