The propane business DeCarli’s rebuked claims that it billed customers late or improperly, arguing that the vast majority of customers have been billed in a timely manner and the few who weren’t should not be entitled to free propane, according to recent court filings.

The filings, submitted last month, come as the business and the plaintiffs in a class-action lawsuit settled in 2010 are set to meet in Marin Superior Court next Tuesday.

This past…