NO INVOICE AND BAD SERVICE

I ordered online, my order was delivered but my order status online was never changed. I had to call in to get the invoice, another inconvenience, as the invoice was not generated automatically, clearly a fault on clicks side. I wanted to return a product to Clicks Soneike on the evening of the 30th of July and the manager assisting me, told me that she could not help me, did not go the extra mile to assist me. I am appalled by the service received and I told her the order number is the invoice number, the more she argued with me that its not. I called the store today and spoke to Marlene but I think Marlene was just covering for the manager in actual fact, not listening to understand my query. I now have to go back to the store to get the product refunded. It wasted my time, effort and diesel. How will clicks resolve this and compensate due to their negligence? Also everyone I spoke to from customer service to the store has no customer service skills.