Only received some of my refund..

[kimA123]

I filed my taxes on 2/2 and quickly received my state refund.  And a couple of weeks later I received only HALF of my federal refund from SBTPG... I am still owed $1,433.  Every time I try calling the listed 800 numbers for them and I go thru the automated prompts of SSN & filing status (press on for single) it then tells me they can not locate any information with the information I have provided..... I really want the rest of my money! Anyone have advice on how/who to contact to collect?? 

[ee-ea]

See this info

Topic No. 203 Reduced Refund | Internal Revenue Service

Why is my direct-deposited refund or check lower than the amount in TurboTax?

Why is My Tax Refund Not What I Expected?

[kimA123]

I have no student loans, other loans, have never been married, no criminal record or outstanding tickets,  outstanding fees, dues or bills.  So the above does not apply to me.