Received no order nor Refund

I have placed an order at Leroy Merlin item was unavailable for delivery. They told me they have created a voucher . Strange enough they are not forthcoming with details of the voucher. I have been taken from pillar to post, lie after lie that I advised Leroy Merlin to refund my money. It has been weeks now. It has been exhausting trying to get an honest answer from them.. What makes it bitter sweet recently I placed another order with Leroy Merlin and had to pay meanwhile they have withheld money from previous undelivered order.or voucher they cannot produce evidence thereof.