To regain your lost customers wouldn't be very easy. The customers might might be very difficult to convince that is why it is good to maintain your customers. I think you can only do this through a discounted price of goods and productsIf you are a business man or a young entrepreneur either big or small, and you have a lot of customers but most of them are no more patronising you, how do you convince them to come and buy from you again.
Is there any way to do that or you have lost them forever.