A Louisiana company and its five shareholders are seeking more than $3 million from Dallas lawyer Douglas Bynum and his former firm, Hindman Bynum, in a lawsuit alleging the defendants mishandled the 2015 sale of the cell tower company.

Xcell Inc. and its shareholders—three in Texas and two in Louisiana—allege Bynum and his firm repeatedly assured them they would not retain personal liability for the company’s debts once the company’s assets were sold. However, the plaintiffs allege, the company and shareholders were sued by a lender in 2016 following the asset sale and were damaged by more than $1 million in attorney fees and the cost of settlement of that suit.