tax on interest

urgent

which ito challan is required for paying the online e tax payment for the interest on saving account is it 280 or 282?

if one have paid the tax on saving interest tax on wrong challan no ie "ito 282" under interest tax (24) under self assesement (300) by epayment than how it can be rectified if it is wrong and it has to be done on ito 280. challan?