One caveat about making refunds: you should state clearly
, from the very beginning, that you will offer no monetary refunds for intangibles like services. Once someone has taken advantage of the service you've rendered, whatever it may be, there's no way to get it back if you do give them a refund. For example, you can't unmow a lawn, or unteach a marketing strategy. At the most, you should do no more than refund the purchase price with other products and services.