(CNN MONEY) Uber's damage control efforts continue.

This week, when some users went to delete their Uber accounts, they received an email saying the company is "deeply hurting" following a former engineer's allegations of systemic sexism at the company. The culture detailed by Susan Fowler made some customers vow to stop using the app.

The spokeswoman said Uber sent the message to about 40 users who specifically referenced the allegations while deleting their accounts. She also said Uber has stopped sending the message to customers, which is similar to a memo CEO Travis Kalanick sent internally this week.

After the blog post was published Sunday, Uber hired former attorney general Eric Holder to conduct an independent investigation. Critics have noted that Holder's firm has close ties to Uber and he previously advocated against fingerprint-based background checks for Uber drivers.

Uber's decision to directly reference Fowler twice in its message to customers is also under fire.

"They are either deliberately encouraging continuing harassment of her, or they are utterly ignorant of how retaliation and intimidation works -- it's unclear which is more embarrassing," Valerie Aurora, diversity and inclusion consultant at Frame Shift Consulting, told CNNTech. The consulting firm hosts diversity and inclusion trainings at technology firms.

After Fowler's post on Sunday, the New York Times published a story in which other Uber employees described homophobic slurs in the workplace, managers who threaten violence, and sexual assault.

Last month, a #DeleteUber campaign went viral when Uber turned off airport surge pricing as New York City taxi drivers protested President Trump's travel ban, prompting accusations of strikebreaking. At that time the company also sent emails to customers who named Uber's opposition to the travel ban as the reason for deleting their accounts.

CEO Kalanick later stepped down from Trump's business advisory council, citing the immigration order.