Tameka Raymond asked a Georgia court last month for full custody of their two kids -- claiming Usher has continually dropped the ball as a parent ...Tameka also claimed Usher callously closed her Saks 5th Avenue credit card -- and now she can't take advantage of the "special benefits" the card offers. Usher countered by filing his own response in the ongoing custody battle ... asking 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. Usher claims Tameka's accusations are BS and he is a great dad.