You are a contractor from HouzDeco which specialises in house renovations. You recently ordered some plaster and building materials from EMC Enterprise for a renovation project. On the scheduled delivery date, your order did not arrive. You were given another date but again your order was not delivered. You have decided to write to EMC Enterprise about the problem and how it affects your renovation project.

Task: Write an appropriate complaint letter to Mr Ahmad Kamil, the Sales Manager of EMC Enterprise.