The grieving widower of a cancer victim was shocked when he received a collection letter from PauyPal demanding an outstanding payment of about $4,300.

Howard Durdle is still mourning the loss of his wife, Lindsey, who died on May 31 at age 37.

He was “floored” when he opened a letter addressed to his wife insisting she was in “breach” of her agreement with the online payment giant.

“Important: You should read this notice carefully,” the letter began. “You are in breach of condition 15.4(c) of your agreement with PayPal Credit as we have received notice that you are deceased … This breach is not capable of remedy.”

The letter demanded immediate payment of the overdue balance, even though Durdle closed out his wife’s account and notified PayPal that she died from breast cancer, according to the BBC.

Durdle even sent the company a copy of Lindsey’s death certificate, her Last Will and Testament and his identification.

PayPal apologized profusely after Durdle gave the letter to the BBC.

“We apologize to Mr. Durdle for the distress this letter has caused,” a spokesman said. “We are urgently looking into this matter, and are in direct contact with Mr. Durdle to support him.”

PayPal claimed the automated letter was a mistake, caused by either a bug, human error or a bad letter template, according to the BBC.

Photo by Justin Sullivan/Getty Images