HDFC Bank — activating dormant account

Address: Kolkata, West Bengal, 700084

I had a salary account in bhubneshwar branch. I had not operated on my account for a long time and it became dormat. I tried to reactivate my account from kolkata. The garia branch office told me that the only way to reactive my account in to submit a cheque to in my account to remove dormancy. I did as asked and things were sorted out. But how could this be the only process to remove dormancy? I was told that cash deposit would not work and there's no other way to go about it. It seems very strange that this is the process in your banking system. What if someone is not able to deposit a cheque? Is this really the process in place or were the people at bank misinformed?