Refund approved 6 weeks ago and still nothing received

I requested a refund on 30 November and was told it has been approved. I still haven't received the refund 6 weeks later. Every time I email to follow up Annelize tells me it will be done this week - but I am still waiting. Please can this be sorted out now, I am a good customer of Nespresso and your service so far has been disappointing.