Teyana Taylor says Iman Shumpert‘s playing dirty in their divorce war, claiming he’s slowly shutting down all the utilities in the home where she lives with their 2 children … TMZ Hip Hop has learned.

In a new court filing, Teyana’s attorney says she woke up this month in the Georgia home they used to share, only to discover the WiFi and cable was cut off, and one day later, the water stopped running … and she’s fully laying blame on Iman.

According to the docs, obtained by TMZ Hip Hop, Iman moved out back in October, and shortly thereafter, Iman’s brother — who handles his personal affairs — told Teyana, Iman intended to shut off the power.

Since then, she claims Iman hasn’t paid a cent of child support, or covered any of the kids’ expenses … including food and clothing costs.

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With the water, cable and WiFi now gone, Teyana’s attorney says they’re concerned he’s going to follow through and cut off the gas and electricity.

On top of that, Teyana claims Iman left her holding the bag on $200K worth of home renovations he started 3 years ago.

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In the docs, she says Iman told her his money is tied up in investments, and proposed she cover the cost and he would reimburse her — but she’s yet to see a penny from him.

Mind you, it’s not like Teyana can’t afford to turn on any utilities that get shut off — she’s clearly got the cash to handle that, but her attorney’s court filing makes it clear … this is about holding Iman accountable.

Since their divorce is pending, Teyana’s attorney points out the court put a standing order in place … meaning both parties are supposed to maintain the status quo on their home and finances until the divorce is finalized.

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She wants the judge to hold Iman in contempt for violating that order, and also force him to start coughing up monthly child support.