Refund query

I have had a very bad experience with Vodacom Fibre since last year. Now i had to cancel my Fibre account after frustration after frustration. I'm still pursuing a refund for the service I didn't receive in May. After failing to pay my account through a debit order in May, I requested an Easypay reference so I could make payment at the nearest retail store. I was provided with the Easypay number and went on to make payment at the retail store. After failing to get service in the next 24 hours i contacted the Vodacom call centre to make an enquiry. They stated that on their side the payment was not showing and i had to send a proof of the payment. I did as asked, but still the issue failed to be resolved, At the end i ended up cancelling the service and requested for a refund. Up to now i am still waiting for that refund and it seems noone is able to solve the issue. The latest response that i got is that i already got a refund in March, something very funnybecause this payment was only done in May.