App subscription getting cancelled without notice

My app subscription got cancelled without notice and my program was down for the entire day. Later on I found that my subscription got cancelled due to unavailability of funds as my funds were transferred back to my bank account on the same day(Quarterly settlement). This is an issue. Zerodha should give some kind of grace period or prior warnings to the subscribers to avoid such situation. Has anyone faced similar situation? Is there any solution to this issue so that it doesn't recur?
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