After you file

I got the letter myself but part gets me is I got the loan from turbo tax of 2500 then I waiting on rest my tax money to get direct deposit I get letter in mail call the number talk to people at irs to them they didn't understand why it was even done being I'd already got 2500 an still owe me 3200 more said it take nine weeks  this my second time had one about 5 years ago I just wonder if it is randomly done or do they pick them out they rely messed my plains all up with this letter .thing is they tried to contact me for 2 weeks I thought was scam.