How do i contact core main for product information? For product information including availability and pricing, please call your local Core & Main location. For Core & Main corporate inquiries including general customer service and accounting inquiries, please call 314-432-4700. M&A inquiry?How do i contact corexcel? Corexcel is an authorized partner of John Wiley & Sons, Inc., Vital Learning & MindEdge Learning. Call toll free 1-888-658-6641 in the U.S. 1-302-477-9730 outside of the U.S. or use our contact form to email Corexcel.How much does corecomm cost per month? CoreComm Internet - Contact CoreComm provides Unlimited Dialup Internet Access for only 9.95 per month. Reliable service since 1995, CoreComm is the best value for the lowest price! Home My Account Web Mail ContactHow does corex help in reducing your business costs? CoReX helps in reducing your business costs strategically, while amplifying service quality. It will let you focus on your core business process, efficiency and growth. Customer service plays an important role in business. Having an excellent customer service not only improves company’s image, but also builds customer loyalty and drives sales.