Reply Consultant interview questions

Terrible experience. I did a lot of unecesary interviews. The first was with the human resource. I clearly tell her my interest, but she organize another interview with a manager for a different position. Then, I refused the job. I did another interview with a middle-manager, and then after 2 weeks with a manager. After another 3 weeks I did the inerview with the customer. After another 3 weeks the manager called me saying that the interview with the customer had gone well. But then I signed the contract after 4 (yes, four) weeks without a specific reason, and I spent the first 2 months in the HQ without task assigned; this because the customer have changed idea in the meanwhile. Then, I was assigned to the same customer but for a position that I didn't apply for.