https://ia903205.us.archive.org/30/items/ultimate-qbs-enterprise-customer-service/the-ultimate-trusted-reference-list-of-qbs-enterprise-customer-service-contact-channels-247-support-guide.pdf

https://ia903205.us.archive.org/30/items/ultimate-qbs-enterprise-customer-service/the-ultimate-trusted-reference-list-of-qbs-enterprise-customer-service-contact-channels-247-support-guide.pdf