I did not receive my return last year and when I went to IRS.gov they said they couldn't tell me anything so I called the hotline and they said the same thing so I don't know what to do.

Do you mean you didn't file a RETURN or you didn't get a REFUND after you filed your return?

I didn't get a refund after I filed my return

File Form 4506-T to get transcripts for the year. You will not if IRS has received the tax return or not. If they did not get it, file it again.

I was also going to mention that if the OP owes taxes from previous years it is entirely possible that this year's refund was seized for that purpose.

It is true that the refund could have gone to any number of garnishments (back taxes owed to the IRS, back taxes owed to the state, child support, back alimony, even garnishment on a private debt if the debt was recginized in federal court).

However, in each case, the IRS WOULD send a notice to the tax payer telling him/her WHERE the refund went and why. Since it seems that the OP did not get this notice, I suspect his/rer return may NOT have gotten processed for one reason or another to begin with.