*Usher is firing back at his ex-wife — insisting he’s a good dad who deserves to see his kids … and never cancelled her Saks 5th Avenue credit card, reports TMZ.

Tameka Raymond asked a Georgia court last month for full custody of their two kids, claiming Usher has shirked his duties as a parent, failed to get her permission to travel with their kids, hired nannies without her approval and much more.

According to TMZ, Tameka also claimed Usher closed her Saks 5th Avenue credit card, and now she can’t take advantage of the “special benefits” the card offers.

But Usher denies the claims — filing his own response in the ongoing custody battle. He’s asked a judge to reject Tameka’s request for full custody, on grounds her allegations are false.

Usher and Tameka currently share joint physical custody of the kids.

As TMZ previously reported, Tameka has also tried numerous times to get the judge to force Usher to submit to a drug test.

A trial date has been set for Feb. 27.