The family of Brady Conger paid part of the cost up front but failed to make the remaining payments when the headstone was erected in September, the Salt Lake Tribune reported Wednesday.
Memorial Art Monuments repossessed the grave stone in May after it repeatedly tried and failed to contact Conger's parents, who were responsible for the payments.
"Our objective was, if we remove it from the cemetery, they'll see that it's gone and they'll come see us and pay the bill," said Mike Anderson, owner of Memorial Art.
Rory Conger, Brady's father, said his wife had been so distraught over their son's death that she had forgotten to make the payments.
"I couldn't even be mad at her, because she didn't remember (not paying)," Conger said.
Conger said he was outraged by the repossession.
"To our family it means everything," Conger said. "I told him (Anderson): 'What you've done is the lowest and the dirtiest thing that I've ever heard of.'"
The headstone was due to be returned to Brady Conger's grave Wednesday.
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