Axxess Refuses to Refund.

Axxess refuses to refund me for unused data for Nov. The sim I received worked for only 5 days and stopped connecting. I was without internet for November and at the end of November despite the unresolved connection problem Axxess debited another R845 from my account. Axxess suggested that I terminate the contract, that I did and I expected Axxess to refund me for the two months I have had no service. But Axxess refunded me for December only.