Welcome aboard... Suziejb.
Again.. Sorry to hear what has happened to your phone.
If all of the above method fails, hopefully you have insurance on such an expensive device. You should then contact Asurion (insurance company for most carriers) and file a replacement claim.
I believe the deductible is either $150 or $200.
Best of luck.
Edit: I moved your thread over to the Htc One support forum for a wider viewing from other users of this device.