PITTSBURGH, PA — Verizon Wireless customers are complaining about porn spam showing up on their cell phones, and they’re not happy about having to pay for it.The text messages received by an unspecified number of Verizon customers were solicitations for adult-dating sites. They began with come-ons like “Looking for a discreet hookup?” and “Looking for a no-strings date?” and included a link to a website.

“You have kids with cell phones,” Dan Shaffer of mobile services reseller Wireless Solutions complained to WTAE-TV. “Some of this material [is] objectionable and should not be able to get through.”

Of more concern to some customers, though, is that they may be charged as much for each text message they receive, making them bear the burden for commercial marketing efforts.

“Here [in the U.S.], in almost every case, you’re paying [for] incoming and outgoing messages, so if somebody sends you a message, that could cost you 20 cents,” Shaffer told WTAE-TV.

Verizon and other mobile services companies say they block “hundreds of millions” of text-spam messages monthly. Verizon and Sprint also have taken mobile spammers to court. Verizon told WTAE-TV it will credit the accounts of consumers who report receiving unwanted text messages.

A Verizon spokesperson said the company is unsure how spammers are acquiring the mobile phone numbers of its customers, but it has not detected any breaches of its secure database. Proactive Verizon customers can block spammers at the company’s mobile-messaging website, VText.com.