Same experience of Autoglass as John has had. Had my Mercedes Vito windscreen changed in the late summer. The new Autoglass system doesn't work for the customer or the technician. In spite of paying the excess online, it said I had not paid and the appointment would be cancelled. I phoned them and they said the appointment would stand and I could pay the technician! The technician was fabulous and frustrated by their system... he managed to log the job as paid for in the end but it was a pain for him too. The system is Salesforce by the way... and clearly the implementation is not for for purpose.
Nick