A MIAMI art gallery owner had to show up in person at music producer Scott Storch’s place to get back a painting Storch hadn’t paid for. Last month, we reported Storch - who was so flush two years ago, he gave Lindsay Lohan a $1 million diamond “friendship” ring - had his credit cards declined at a Miami club, and since then, Paris Hilton’s music-making pal has been paying cash for everything. Now, South Beach gallery owner Dmitry Prut says he recently paid a visit to Storch’s Miami mansion to get back a $7,500 painting. “It’s a beautiful pop culture piece of a girl raising her skirt by Amir Aziz. He said he loved it, so I gave it to him, along with an invoice” said Prut. “He had it hanging in his billiards room for four months and ignored my calls to please pay me for the piece.” But when Storch never came up with the cash, Prut says he drove over and buzzed his gate: “His security guy answered and went on about how much Scott loves it, but I said, ‘I have to pay my own bills.’ His security brought it right out to me and that was that. I returned it to my gallery.” Storch’s rep did not return our calls.