Siemens disappoint

The inner glass of our brand new Siemens oven exploded one night. The oven was not in use, the whole family was already in bed and there was a loud pop and falling glass. The after sales service has been really terrible. Rude telephone operators at the call centre, and technicians that have never returned with an answer of an update when they promised to. We have been passed along from pillar to post for more than a month now and have been without an oven for 2 months! There is no sense of urgency from Siemens. Even the sales rep for our area has not responded to being asked to phone us. So 2 months along and apparently they are now planning on ordering the replacement glass which will take 3 weeks at least. Needless to say, we cannot recommend their product or their company for after sales service.