David is the manager of an advertising agency. He is very staff focused and uses extrinsic rewards to motivate his staff. Therefore, he signed a one-year contract with Flowersdirect Pty Ltd to deliver a '12 fresh red rose present package' to each staff member on their allocated birthdays to their home addresses. For the first three months the arrangement was followed with staff receiving 12 fresh roses, and an additional small box of chocolates. However, David soon receives a letter from Flowersdirect stating that due to supply shortage they are reducing the number of flowers to 11, instead of 12. Later, after 6 months, 2 staff members complain that they didn't receive their box of chocolates with their flowers, and 1 staff member saying he did not receive anything at all. When David contacts Flowersdirect they explain that they did not have an allocated address, and now due to change in company policy they will be only delivering 11 fake roses to each staff member, and only to David's company's work address from now on. Advise David as to his contractual rights. In your answer, discuss what remedies may be available to David, if any.