Invoices and little information on specific branded items

If you want to return a dell product, please let your customers know that they need to print out the invoice first. Once you click return item you cant access the invoice again. There is no info saying they should first do this because they need the invoice to get a credit note from dell, and this they tell you after you drive all the way to the warehouse to return the item. I won't want the delivery guys with this as they might have an accident with it. Nowhere does the site have any of this information, its just a bad customer experience and can be avoided with a line of text once the customer has to return that specific brand of item, eg Dell. I wont be buying Dell again off Takealot for this specific reason.