Having a long call with verizon now. They're looking 12 months back to try and find a period when I exceeded the three consecutive months rule.
Legally their wording is difficult to understand in the terms. They're arguing that it's the sum of three consecutive months that count for usage. It could also be interpreted that their wording means three consecutive periods where each billing period is individually judged to be 50% or greater overseas.
Frustrating.