Overcharged my debit order

<p>Vodacom send invoice and statement and when time came to debit order they too R45 too much off my debit order. After many calls they acknowledge their error and credit not will be passed. Received new statement and no credit note showing. Called again and due to the account department being busy they could not deal with my querie and was promised a call back. Still waiting. Received SMS about service and if not happy could reply and they will call back... Still waiting. Every time I have called I have had to hold on for over 8 min due to call volume. Quick to take money slow to give decent service. I have even a ref for my querie yet every time I call I have to explain every time what the issue is.</p>