How would you sell a product to a customer who doesn't want to take it?

Costumers are most important part of any business if a costumer is not interested in your product then its quite sure you are not fulfilling his/her needs first thing is to evaluate the needs & wants of costumers & then implies your marketing strategy. 

Study the requirements of the customer, give him comparative presentation amongst other products and your product. Explain the customer how you are better than other? And how they will be in benefits to choose your product. And finally give some complimentary gift to attract the customer.

Sometimes it all depends on the approach you begin with as for me I think the best way is to make the customer try or taste the product first , in this way you can be able to sell the advantages to the customer of buying the product easily as customers are looking for the benefits of buying your product instead of buying from your competitors.

introducing the product in front of the customer and show the good quality of it....