It seems you have traded in a different account. Please check once and drop us an email at help@dhan.co from that registered email ID so we can look into this.
Just to add, the DPC interest will be applicable on a negative balance and also the ageing debit square-off as stated in our Risk policy.
But I wonder why DHAN does not consider standard charges when I delivery order is placed. And allow me to place order considering order value + standard charges.
i.e. funds available should be greater than order value + standard charges that apply if order is successful.