I would like to request a quote for a native customer service application. We are a company that serves clients in terms of obtaining financing, accounting as well as in terms of legal. We want to create an application that will help us remotely service clients - secure sending of sensitive documents, direct contact with a live guardian, live chat, the ability to sign documents via this application (e.g. contracts concluded between us), the possibility of an integrated payment invoice issued by us. I would like to have a database of my users, about 15 subpages.
I would like to know a valuable indicative of such an application