Hi, I'm returning/refunding a customer for a customer who does not have their receipt. I'm literally having to use a calculator underneath our clover terminals in order to tally the total refund for product price and tax. Why can't I issue a simple refund assigned to an item as if it were in the register. We are a retail establishment and are baffled as to why the return process is so limited and therefore, confusing to the merchant. Please allow for partial refunds as well. Thank you.