I received a different amount for a refund than on my tax return. Do I need to file an amended return?

I filed my return on 7/15/20 expecting a $2700 refund. My direct deposit on 8/19/20 from the IRS was $33. They never notified me of an error. It has been over 4 weeks and I never received a letter from the IRS about the different amount. Do I need to file an amended return?