Instruct: Classify a given Amazon review as either positive or negative.
Query: Very bad

I've bought the Avantalk Mini Bluetooth Wireless Headset and after two weeks instead of the connection with my blackberry is normal, it can work properly. Everything is ok,m the connection, my blackberry find the heaset, however I can not listen the incoming call! It stop working! And now I do not have any place to claim!