Hi Patricia,
We are sorry to hear this, as the discs are so small and thin they can stick together, we would advise to carefully use your thumb and first finger to rub each disc between them and separate if there are 2 stuck together.
Please contact our support team on customerservice@towerhousewares.co.uk with an image of your invoice for our team to advise further.
Kindest regards,
Tower Customer Care.