After you file

Has anyone been told they’re under 45 day review but the irs rep will not tell you why? I’ve call three times and I have been told three different things. 
i filed 2/3 accepted 2/3 irs says I was accepted 2/5. Updated last Saturday from accepted to still processing with 152 

 

all week I’ve check nothing has changed. I called tax rep and she told me 45 day review Is unknown it’s something to get you off the phone to cover up how far behind they are. She also said if I have no additional codes or letter received just wait it out bc the refund is coming. Don’t know who I should believe but I’m waiting