Vodacom POOR service from accounts department | billed me for something I didnot use

Hi All, I ordered phones via the Vodacom website. Never received the phones and I was told my order was cancelled. But I was billed for something that i never received. Called multiple times to the call centre. Went to the branch in Mall of africa, I was told that i need to speak to the telesales. Called again and I was promised for a refund. It has been more than 4 months now and still waiting for my refund. This is very poor service from a huge company as VODACOM. Vodacom can do better.

Please assist. This is not the kind of service we expect from a huge ISP as vodacom.