A heartbroken bride is demanding her money back after the designer EUR-860 wedding cake she ordered for her big day turned up as ghastly gat-eugh.

Furious Mediha had turned to a trusted pastry chef to create her dream cake for her marriage to sweetheart Lillo in Herstal, Belgium.

Mediha even drew up a blueprint for the exotic four-tier creation with delicate decorations carved from mango and a waterfall of flowers cascading down the side.

The excited bride had paid EUR 710 for the hand-crafted cake plus a delivery charge to the reception.

Picture shows the failed wedding cake, undated. The cake was a disappointment for a couple from Herstal, Belgium. Note: Private photo taken from social media. (Medya Hevin Polat/Newsflash/NX)

But she could hardly believe her eyes when the "sloppy mess" arrived just hours before guests began turning up.

Photos of the bizarre creation show a wonky, crushed-looking cake with icing that seems to have been slapped on with a brickie's trowel.

And instead of the beautiful flower cascade, the tiers are overloaded with huge, meaty chunks of mango.

Mediha said: "It's unbelievable that the baker left it like that, but of course, we saw it too late.

"Otherwise, we would definitely have gone and got another cake."

And to add insult to injury, said Mediha, its weird taste had guests retching too.

Picture shows Medya Hevin Polat's post on Facebook translated on English, undated. The post was about a cake. Note: Image is a screenshot from post. (Medya Hevin Polat/Newsflash/NX)

She said: "Everyone thought it was too greasy. Apparently, the cake had to be taken out of the refrigerator earlier, but the baker hadn't let anyone know.

"Our guests thought it was a joke. Some even asked when the real cake would be brought out."

The baker later owned up to her mistake but refused a full refund and offered to refund only the cost of the flower cascade that never turned up.

So the couple took to Facebook to get revenge on the baker, who has not been named.

Besides a broken heart emoji, the post starts: "This is the cake I got for my wedding. Paid EUR 710."

It goes on: "Ordered: a flowery, elegant, refined cake. Received: a sloppy disaster without decoration in a dubious taste."

Then, Mediha added: "Despite my complaint, the pastry chef refuses to refund. I'm saying it publicly to prevent this from happening to others."

Finally, she urged readers: "Thank you. Please share so justice can be done."

(Joseph Golder / newsX)