There are many reasons why your refund could have been adjusted. 

Please see TurboTax FAQ below for additional information. 

Why is my federal refund less than I expected? 

https://ttlc.intuit.com/replies/3288510

*PLEASE NOTE: TurboTax does not have information concerning a taxpayers refund, reduction of refund, nor offsets. Please Contact the IRS for additional assistance. 

IRS: Customer service representatives are available at 800-829-1040 Monday through Friday, 7 a.m. to 7 p.m. local time unless otherwise noted. Residents of Alaska and Hawaii should follow Pacific time. Puerto Rico phone lines are open 8 a.m. to 8 p.m. local time.