did you mean, you sent in the  amount due but the check  ( to the taxing authority -- IRS / State ) has not been cashed yet?  When did you send the check and did you include the form 1040-V ( for IRS ) or XX1040-V ( where XX stands for the two letter state abvr. ) ?  Did you send the check to the address  called out by the TurboTax paperwork ?