Quest Global Data Engineer interview questions

i have given 3 rounds of interview than after 10 days Hr told me to submit all my present company documents which i submitted later they did not call me for 15 days ,when i asked about my status of the interview they told me some stupid reason which is completely irrelevant . For a data engineer interview they asked me data scientist related questions which is mainly into difficult machine learning tasks which i replied correctly. They are doing joke in the name of data science.