Domingo Zapata — the jet-setter artist who’s a favorite of Lindsay Lohan and Sofia Vergara — recently hired an agency to manage his social media accounts, but he’s now accusing them of hijacking his Instagram and Facebook profiles.

“My dear friends my old account was stolen by some lowlife gangsters please follow me on this one!” Zapata posted on Instagram Saturday when he abruptly created a new account for himself.

Zapata then became embroiled in a war-of-words with execs at The Big Fat Mouth, a firm he’d hired to manage his social media profiles.

“I paid you 10k for 2 months of work and my lawyer fired you for reasons you know,” Zapata wrote, “let the police and the lawyers deal with it.”

But Big Fat Mouth CEO Jonathan Ressler countered on Instagram, “Actually you ended it because you did not have the money to pay us according to your finance team,” and “unfortunately you have a contract that I agreed to settle with you, but you reneged on that too . . . If you did not have the money you should not have signed the contract.”

A source close to Zapata said the disagreement stemmed from a video Big Fat Mouth posted on the artist’s Facebook page showing him and a woman leaving the Chateau Marmont in LA.

“They were told not to post any personal images,” the source said. “They were not seeing eye-to-eye. But then [Big Fat Mouth] said, ‘You have to keep paying us.’ They changed the passwords on all his accounts. They’re saying he doesn’t have enough money to pay. He’s getting the police involved, and his lawyers want to sue for defamation.”

But Ressler told us: “Domingo hired us for six months and has not been paying us. So we denied him access to his Instagram account. We had an ironclad contract. He approved the invoices. We agreed to let him out for a small fee, he agreed and then reneged. This is purely a financial issue. We want him to pay us for the work that we did.” Of any upcoming legal battle, he said, “That’s not the route I want to go. It’s just silliness.”