The learning toy, made in China, includes 26 blocks, one for each letter of the alphabet and a word that starts with that letter.
However, Toulson noticed after she had bought the toy that the Y block misspelled yacht as yatch and the U block said umbrella should be spelt as umberlla.
Suzanne, who had planned to give the blocks to nine month-old granddaughter Millie, said: "There are only 26 words on these toys. You'd think they'd be able to get them all right.
But when the error was pointed out to Morrisons, she was told the bricks would remain on sale until stocks ran out.
Toulson explained: "When I contacted their customer services, they told me that new stocks were on their way but they were not going to withdraw the ones with mistakes but let them 'fizzle out' instead.
"I couldn't believe their attitude. I have been back to my local store and there are at least a dozen toys on the shelves which still have the same mistake."
Morrisons' decision has since been reversed however. "The children's soft blocks have been withdrawn from sale in all stores," said Morrisons. "Customers can return the products to store for a full refund. She said the matter was now being taken up with the suppliers.