A support hotline refers to a phone service that customers can call to receive assistance or support for a specific product or service. Synonyms for support hotline include customer service hotline, helpline, technical support hotline, help desk, troubleshoot line, and assistance hotline. All of these terms refer to a similar service, offered by companies to their customers. These hotlines are staffed by trained professionals who can provide assistance, answer questions, and troubleshoot problems. Whether you're struggling with a software issue, need help with troubleshooting a product, or have general customer service questions, a support hotline can be a valuable resource.