Clicks Honey Ridge - terrible service

Very disappointed by the horrible service I received at Clicks Honey Ridge on 10 Dec. I paid cash for my monthly script and asked the pharmacy assistant to email me the invoice so I could forward it to a third party for refund. She insisted on giving me the hard copy even though I repeatedly told her I needed the soft copy. She eventually said she couldn't do it then as she was busy, she would do it later provided there was no load shedding. There was only one person behind me, there was no queue. On 11 Dec I called Clicks head office to complain about the incident and to request the invoice as I have to submit it urgently or I won't receive my refund this year. Today is 14 Dec I still haven't received my invoice.