[Resolved]  HDFC Bank — salary account automatically converted into saving account & bank started deduction of non maintenance charges from last 4 year

Address: Sahakar Nagar, 411041

My salary account opens by my company in hdfc bank n after i leave that company for some reason so; after without any intimation bank transfer my accounts from salary to saving with minimum 10000/- rs amount.
After that when i getting msg from bank that; you have charged 600/- rs for non maintaining balance in your account.
After that 8 visited to my home branch & other hdfc for the same complaint. I also refer them that please convert my saving account in to salary account or close it.
But everywhere they told me that you have to pay all minus balance which after that you can close your account or you can convert it into sarkari account.
Near about last 3 years bank is deducting 600/- rs per month.
So i want solution on this same.