Why do I see lead request on the invoice which I returned?

It is possible that returned leads have not yet been assessed and are therefore still on the invoice

The leads you return are first treated with care by the Bambelo Consumer Team. It is therefore possible that returned leads have not yet been assessed and are therefore still on the invoice. You will be notified once the returned leads have been reviewed. The returned leads that have been accepted as a return will be credited to you on the next invoice.