Doubt that PVue will give you a refund, but you may have possible grounds for a retake.
Had a similiar problem last summer. A guy in the room right next door was giving a lecture to a class and his resounding voice kept eating at my nerves. The second time around I stuffed two wads of damp tissue paper DEEP into my ears and then put the earmuffs on as well. It was so silent that all I could hear was my heart beating

The double plugs even muffled out my own keyboard tapping! If you think you will be even slightly distracted next time, and don't mind tweezering out some tissue from your ears, then give it a try.
As far as I know, under current PVue regulations, "double plugs" do not classify as cheating.
Also, it is true that the proctor can stop and restart the test at any point in the exam during such an unusual event.