Cp14 letter even though I paid onturbotax

I e-filed and paid my taxes on TurboTax. All at once I selected the pay with a credit card here on TurboTax and then I received a CP 14 letter on June 3 I was not able to get through on the IRS phone even though I waited an hour and a half, I talked to the TurboTax and they told me the payment went through 1040 thunder I was not able to talk to anyone with the pay 1040 but the system confirmed my payment went through. I can’t talk to anyone live here. They tell me to call the IRS. It’s getting frustrated , what should I do?