Delayed refund

My vehicle finance account was settled in full and the consultant called me and confirmed they have received the settlement on 28 April 2026. However, despite settlement, the monthly instalment amount was still deducted from my account. I wrote them an email this morning requesting refund, they told me the account is settled but I will get my refund after 14 days. When I ask the consultant will I receive interest on my refund for 14 days. She told me no and I need to wait 14 days. I don’t mind waiting 14 days but I have to earn interest while waiting.