R.R. Donnelley Senior Software Engineer interview questions

worst interview, there were supposed to be 4 rounds of interview L1, l2 and managerical and HR discussion, but for me they took L1 for 3 times for 2 different project, they only wanted me to attend the interview also they even asked me to extend the joining date of other company which i had offer, finally they were supposed to conduct HR but instead of that they again surprised with technical and just vanished into thin air, just waste of time for one long month,