Cook Illinois is a transportation company that specializes in providing school bus services in Illinois. However, in recent complaints filed against Cook Illinois, customers have expressed concerns regarding the company's failure to return their security deposits. One of the main complaints against Cook Illinois revolves around the company's failure to return security deposits in a timely manner. Customers claim that after returning the rented buses, they have not received their security deposits back even after the stipulated time frame. Furthermore, some customers have reported that Cook Illinois deducted excessive amounts from their security deposits without providing a valid explanation or itemized list of damages. This lack of transparency in the deduction process raises concerns among customers who feel that their funds are being withheld unfairly. Another issue mentioned in customer complaints is the difficulty in reaching Cook Illinois for inquiries or clarifications. Customers express frustration over unanswered calls, unreturned voicemails, and delayed responses to emails, which prolong the process of retrieving their security deposits. Additionally, several customers have complained about the lack of communication and updates from Cook Illinois throughout the security deposit refund process. They argue that they were not informed about the reasons for delays or any necessary documentation required to complete the refund process. While there may be varying types of complaints filed against Cook Illinois regarding failure to return security deposits, the underlying issues generally revolve around delayed refunds, excessive deductions, unresponsiveness, and lack of communication. These complaints highlight the need for increased transparency and improved customer service within the company to ensure a fair and efficient security deposit refund process.