Refund

I was contacted by Africa mobile for a contract on the 2 august 2024, I told the consultant to only debit me in September 2024. Then on the weekend my son in the Netherlands told me his sending me a phone, so on the 5 th Aug 2024 I used a friend phone to cancel the deal via WhatsApp, I fogot about Africa mobile as they didn't debit me in September as organized I was under the impression that they had cancelled the contract. On the 1 st October 2024 Africa mobile debited my account with R359. I immediately phoned them and asked them about the debit ( they have no record of the cancellation) I demanded my money back and in between the phone calls and Whatsapp I got shunted around, they then told me that I had to pay a cancellation fee of 350 and I told them that no where in the conversation with the consultant did she give me information on the cancellation process, which they should have done,if I knew that from the start I wouldn't have gone through with the contract. I have spoken to them time and time again asking for the manager to call me back so we can sort out the problem but Nobody calls me back to resolve this matter. All I want is my 350 back ( they refunded me R9 rand) they won't take ownership and accountability for their mistake and refund me my money.