Interview process was smooth, completed my 2 rounds , was left with client interview but when it came to release the offer letter after HR discussion they stopped picking my phone and left me hanged.

I went through the interview and it is very negative like they ask me to tell about gcp for 10 mins I told first time then again same questions then I explained again then again for 10 mins And each time she is going on mute and the whole interview process is for 30 min and when I explained in deep technical process then she tell me my mother will also do the same. And my daughter who is in class 2 of cbse also do the same .then my question to hr why this unprofessional behaviour to me do you really need hiring or misbehaving with the candidate. Fyi I have 1 offer from a good MNC company atleast there I will expecting good professionalism.