This happened to me. Chesapeake paid the land owner but we owned the mineral rights. That is recorded at the courthouse. They either wanted to cheat you, just forgot to pay us or were too lazy to look it up. We paid an attorney to get it right. It was worth it as there was leasing money for 80 acres at $1650 involved plus royalties. Get a lawyer. They will collect and get you your money, then deduct about 5 % for themselves. Worth it.
You can call me if you’d like. I can explain it to you. 909 9362266