Tax Amendment 2019

I mailed by amended tax return document to IRS  in April and when i see the status under "where is my amended return " , it shows

"Your amended return was received on XXXX XX, 2020. However, it has not been processed. We apologize for any inconvenience.

Please call [phone number removed], extension XXX, between the hours of 7 a.m. and 7 p.m., Monday through Friday. You will need a copy of your amended return."

 

. I tried 100 times calling the number and every time it says we are sorry please try later on or call next day . Anyone feedback/suggestion ?