equipment replacement

I got an email from directv in 2020 asked to replace my old equipment at no cost and there was no word stating about the agreement of any new service contract with directv. When I canceled the service in June 2021, the rep. name Elizabeth [Edited per community guidelines] told me that there is no early termination fee because I don't have any signed contact. However, ATT directv did charge me for the termination fee in the total of $374.24 which I have already paid by autopay. Please let me know why I have to pay for this amount. I have been calling directv many many times to request a refund but no answered as of today. Thanks!