Debit order charges

FNB charged me for a failed debit order whereas i paid the account directly after Mobicred's debit order did not run on the 26th/ 27th as per normal. I even contacted Mobicred where Mfusikazi advised i pay directly into Mobicred's account of which i did and emailed them proof of payment. FNB please reverse my R115 and charge Mobicred as they are at fault.