A family was left devastated after cutting into a high school graduation cake to find it was made of Styrofoam.

Marsy Flores, 42, from Pasadena, Texas, became suspicious when the knife was struggling to cut through daughter Lea's cake.

After closer inspection, the family realized that instead of a soft cake filling beneath the frosting there was actually Styrofoam.

In the video, posted on social media by the graduate's aunt Nellie Flores, the family can be seen prodding the solid block beneath the blue and white icing.

The family were 'very upset' upon cutting into the high school graduation cake to find out that beneath the frosting was in fact Styrofoam

Lea during her high school graduation - her family could not believe the 'two tier' cake they bought for her was made of Styrofoam, after they claimed their previous order was 'lost'

The family claim that Walmart 'lost' their order and then gave them the cake that had Styrofoam beneath its frosting

One person described it as 'ridiculous' while another in disbelief said, 'This is what they gave you?' - in the clip that has drawn more than 113,000 views so far.

The family claims this was the second error by Walmart. They say the store's bakers also initially 'lost the order' for the two-tier graduation cake - that would have cost between $32.98 - $55.00.

It was then that the family was offered a different cake free of charge, according to Fox8.

Mum Marsy opted for a smaller one, after which bakers took it away to add a picture of the graduate along with several decorations.

Since the incident has been reported, the family has received a $60 gift card for the store.

On Facebook, aunt Nellie Flores raged that the peace offering was not enough for the 'humiliation'.

Lea is pictured at her high school graduation. Little did the family know their celebrations were soon to be disrupted

The family were left 'very upset' by the mistakes, which Walmart have given them a $60 gift card for. Mother Marsy Flores (left) and Lea (right)

She said: 'It can’t make up for the embarrassment and humiliation she went through with family and school friends there... I hate Walmart.'

Mother Marsy Flores remains 'very upset' by the incident and could be seen welling-up while talking to KPRC.

She said: 'This is my baby and she was graduating so it was very important to me. I wanted it to be perfect.

'They didn't have her order, they didn't have anything ready.

'There was a small blue one, which is her school color, so I chose that one.

Since being notified Walmart has given the family a $60 gift card

Graduate Lea pictured after receiving her high school diploma

Aunt Nellie Flores posted a video of the cake online, which has so far attracted more than 113,000 views on Facebook

'They said they would put a couple of graduation things on it and her picture.

'I go to cut the cake and it was not budging.

'They can't replace the moment that we lost. It’s a special moment, and this is what we got for it, a Styrofoam cake.

'Not only did they mess up one time, they did it twice.'

Lea added: 'It's mom's big day as well, it's not just mine.'

Walmart released the following statement, after being approached by KPRC: 'The incident was a result of a misunderstanding. The matter has been resolved. The customer was given a gift card for her inconvenience.'