After-sales service of the mediocre! 4h I wait for...

After-sales service of the mediocre! 4h I wait for their call while I'm out of boiler and it is always under warranty, less than a year!
From the start for troubleshooting, after long wait (justified), charming lady on the phone who made every effort to ensure that it is served quickly. The valiant technician has just left after intervention, heating restarted. Thanks anyway to all of you. And, I apologize for your nervousness to you. Michel Bruck