refund on a machine

Bought a Dewalt machine on the 2018/03/07 on the 2018/04/24 the machine is not working (only a month ) went to the shop for a refund on the machine and the manager Raymond Klopper tells us that the machine has to be repaired , how can a 1month old machine be repaired ????? how many problems are we gonna have with this machine ?Their policy states that a customer can get a full refund within 6months of the purchase........ and Raymond a read to us a 10days refund policy that only applies to customers who purchased good via on line , meaning he is treating us like stupids coz we bought the machine at his store .