3 out of 3 phones broken within 1 month of purchas

Please can someone help me, as I can not call any Nokia number as they are all incorrect on the net. We bought 2 x Nokia 830 Lumia's mid March. The first one was an OBF where the camera on the phone disappeared off the phone completely. Tried every software upgrade possible. Eventually Nokia replaced the phone. (WITHOUT A PHONE FOR 7DAYS). On Thursday last week Phone Number 2 did the same thing. <br> Today replacement phone did the same thing 3 STRIKES!!!!! I don't have time to drive up and down repairing phones and being without a phone every time...I have been a loyal Nokia customer...not so sure anymore.<br> Where can I call????