bad service

I have a contract with vodacom and my debited order date is the 01 of each month. I decided to pay early on the 25.05.2024, to my surprise they debited me on the 28.05.2024 the very same amount I paid on the 25.05.2024. I sent them a message on instagram on the 29.05.2024 and a refund was initiated on the same day. I am still waiting for my refund still today. I called my bank yesterday and ask them if they see any refund of 792.98 from vodacom they confirmed that no. I dm vodacom again on instagram to tell them I called my bank and my money was not reflecting yet. The person was rude.