Explain about the postpurchase interaction briefly.

Postpurchase Interaction:

Customer support and service: The considerations at such can be explained by the following illustration:

Consider a bundle containing a portfolio allocation model, visualization tool to graphically depict percentage allocations and a quadratic programming solution algorithm into different instruments.

Into executing such bundled service, the user sees that upon supplying the inputs, than the Expected output (that is a pie chart depiction of portfolio allocation) is not returned. Who must the consumer turn to address such problem? Must the consumer approach the model provider, the visualization tool provider? Post purchase interaction is completed to make sure that the rights of both consumers and providers are sheltered.