If deep-seated individuals purchase social security, social security contributions will not be deducted due to insufficient bank account balance in a certain month. Will it be deducted at the back?

You should be able to apply for supplementary deduction at the claim window declared at that time, or save enough money to collect it with next month's. If the arrears exceed three months, the account payment will be stopped, and if payment is needed, you need to re-apply at the collection window. If there is no deduction this month, you need to go to the collection window!