I've just had a shock as I thought I'd set up a one-off direct debit, but I actually set it up recurring! Which means we've paid the letting agency for our old flat while we haven't been living there. We paid £200 in October which should've been a one off, as we ended the tenancy at the end of that month - however due to my error we paid them the same amount in November, December and January. I've rung them today to request a refund of the £600 and they said they can do this less an admin charge of £25. I know £25 is a small amount compared to the overall amount, but AIBU to think we shouldn't pay anything; they should just refund us the amount we paid in error? I know it is my fault but as we weren't even their tenants after October I also feel we should be entitled to 100% of the money back.