Sir,
It depends upon the date of invoice. If the invoice is dated prior to 1.3.2015, then your supplier would have charged Education cess and Secondary and Higher Education cess since these are exempted from 1.3.2015 under Notification No. 14 and 15 of 2015 CE dated 1.3.2015. If the invoice is dated prior to 1.3.2015 you supplier would have charged the cesses and you can take credit of the same but you cannot utilise the same the cesses are not payable on or after 13.2015. However, there is no clarity how to utilise the closing balance available in your credit account on or after 1.3.2015. We have to await the instructions from CBEC. However there is no question of refund of the same.