How do I correctly issue a refund to a customer?
There is no ‘refund’ tab or section that I can find to do this.

My business is totally service based, so I don’t have any inventory stocks.

If I have a customer who purchases and pays for services, I generate the invoice for those services and the customer pays the invoice. Then the customer calls back and wishes to alter the services they have purchased - for example they may not now require a particular component of the package they originally purchased, how do I effect a refund to the customer?

I believe this guide may answer your question; Pay a refund | Manager