The companies which profit a lot are the ones who are big on after sales service. Once you have sold something to someone, how do you treat them? Some companies will say that they are a phone call away but the call never goes through. It’s like you are no longer their business once you have bought from them. Even if the product you sell has an issue, the client will not complain much if they are able to access assistance when they need it.
Customers never forget about how they are treated. Even if the product they bought was amazing at first, they will give a bad feedback if they don’t get the necessary assistance when they need it. Never let the customer feel like you want only their money. Make them feel that you want to provide for their need. Show them they are valuable to the company and they will keep coming back.