Vodacom does not provide invoices for puchases of data.

I purchased data from Vodacom and did not receive an invoice or other form of proof of purchase. I have reported the faulty Order History menu item on their app several times, have called the helpline, and have contacted the e-services on more that one occasion to try to get proof of purchase, to no avail. I urgently need that invoice for work purposes. I am dumbfounded that Vodacom seems to think that an invoice is not a mandatory business practice and that clients must spend hours on the phone, to no avail I might add, to try to procure proof of purchase.