*New documents filed in the ongoing legal battle between Usher and his ex Tameka over the custody of their two kids reveal that the singer is refusing to pay her request to foot her $50,000 legal bill, reports TMZ.

In the court docs, Usher claims that Tameka has consistently defied court orders and filed frivolous motions, like the one trying to force him to take a drug test.

Usher claims he’s already paid $25,000 for her attorneys and has shouldered the brunt of the finances associated with this case, especially when it comes to their kids.

In the documents, Usher states that Tameka’s actions “directly harm the best interests of the minor children. Clearly, such actions should not be tolerated, much less rewarded.”

A judge has yet to rule.