In my extensive career using agencies from all over the country for both personal career development and recruitment for my company I have never encountered such incompetence to this level. You could write a comedy sketch from my experience(s) with them.
They don't get back to you, ever. The receptionist fields calls and 'pies you off' when you've not had a phone call back as you were promised when you last got 'pied off' by her.
Even the office in Newcastle is in a stinking back lane difficult to get in to, which should have told me enough about them already.