North Dakota

My family owns 160 acres north of Killdeer, with active leased out wells, including a super drilling unit, for a well on the border of a standard drilling unit. This means that that one particular well pays one half standard leased royalty interest. A well next to that well for which we have full royalty interest was paid out to us in the past 3 years has had its production shifted the lower paying well, by back-COOKING THE BOOKS AND DEDUCTING A MONTHS PRODUCTION every month for the last 3 years, and now Marathon says I still owe them now about $4K, thus causing an undue hardship. This is egregiously criminal activity and breach of contract on their part. Deal is, they have inadvertently given me all the necessary information & proof to sue the Crap out of them & start a class action lawsuit. All I need is a good lawyer to Start it off... Any suggestions?