E815 bluetooth problems?

I've had the bluetooth hardware fail on 3 separate E815s the most
recent immediatly after getting my second warranty replacement phone.
Has anyone else had a similar problem? Tech support at Verizon denies
any knowledge of this being a frequent problem. I've got another year
on my contract for 2 phones and the warranty is about to expire on the
only one that still works. I'd hate to have to pay full price for a
replacement.
Thanks for any input.