Wrong product delivered and then told it out of st

I bought the batwing cape on the 25th of February. With the product being delivered on the 29th February, but when I opened it was a different coat, one which is didn't order. I realised that the label of the jacket i received said it was a the cape, but it was nothing like the photo seen on the website and that it was a different jacket. So thus the jacket tags got shaped. I immediately contacted spree to inform them about the error, with them telling me that they will require time to investigate the matter. However on the 3rd of March I was been informed that the product I ordered and paid for is sold out. This is unacceptable as it not my fault that spree made a mistake and I'm not paying for spree mistakes. At the time I purchased the product it was in stock, so why must I be punished for spree stupid mistakes. And saying sorry will not fix it, as that all you can tell me, how about what can you as company do to fix the errors you made.