Tech Mahindra interview questions

One of worst experience i have gone through in professional career, got a call from HR for walk-in interview, had 2 round of technical interview and 2 HR round. CTC negotiated and HR told you will receive offer letter in next two weeks. No communication for next 4 weeks, just got a mail to submit all required documents and then again no communication for next 10 days. Called HR to know the status, he told the position is on hold(they don't even bother to inform by themselves). And the best part is next weekend they are conducting walk-in for same technology for same experience at same location. And i got interview invitation for that also. Pathetic hiring process. Poor HR management.