OnGraph Python/Django Developer interview questions

my review in one word "Strange" hehe😂 I got a call from the HR and my interview fixed for the Django Developer. Later I cleared both first and second round and interviewer said that "your knowledge, technical skills and your project is too good" and you will get a call from the HR by today or tomorrow. But I didn't get any call so I called the HR and asked about my result and strange she said that your feedback of interview "you are weak in MySQL and currently our requirement not matching with you" but interviewer never asked any questions regarding MySQL he only asked about python and Django and I gave the answer of every question but still I'm rejected because I'm weak in MySQL. WTF!!! you never asked questions regarding MySQL and you are saying you are weak in MySQL. Strange Strange and Strange.