They refunded me for a product I didn’t return. I told them to charge me again and they said they would, but they never did… Another time they refunded me for

They refunded me for a product I didn’t return. I told them to charge me again and they said they would, but they never did… Another time they refunded me for a product I had returned, and months later they refunded me another €6 for ‘shipping’ (I hadn’t paid for shipping). I called them and they told me to keep it, so I did.