Demands and expectations not met

The good reviews are not comprehensible for me. Priced at about 30.- The quality is a big disappointment. With plugged Ohrenpad the interlocutor sounds dull and difficult to understand, sounds as if he were speaking through a thick piece of cloth, without pad hurts the plastic parts after a short time and the quality is not much better. Even at full volume should be no background noise as possible, because the sound is not very loud. Even after 2 weeks of the plug had a loose connection, the headset is now unusable.
The only advantage seems to be that the interlocutors a well hear very well, but unfortunately this is only half the battle. Too Bad.