SBI Charges wrong financial charges

I am using SBI CC from last 3 Years and my Card no is 8361 Last month my statement amount was INR 5546 and I made a payment of INR 5000 before due date but in this month’s statement I got the interest charges of INR 072, I cant understand If i made a payment before due date then why they have charge interest on Rs 546 instead of full amount. i am using CC of 5 banks but no other bank like city bank, icici bank charge interest in this way, I am very disappointed with this , As of now I already blocked my both primary and supplementary cards,