Winni — Rude customer service

I've tried a lot of such services providers but Winni is the worst. We ordered a Vanilla cake for our anniversary and a chocolate cake was delivered, without the msg that I asked them to attach. The customer service representative said that the refund won't be possible and that the cake would be replaced and the response was very rude. Worst service worst product. Winni should be ashamed for this and for looting customers.. Shame on you.