Worst Customer Service Ever - case no. ***1

My home internet ran out of data on Tuesday - unusual but I am not working from home so thought possible. So I purchased 500mb on Wednesday. By Thursday morning it was gone despite me using very little internet. I called the helpline Thursday morning. I spoke to 3 operators, was on the phone for a total of 45mins. The operator confirmed that I had no data use at all, but couldn't do anything other than open a case. At the time they told me it would be 3 days (confirmed I would have an answer on Sunday). Called on Monday - was on the phone to 2 operators for 15mins. Confirmed that the previous call the operator "****" to me and that I wouldn't have a resolution until a week later. So I have been without internet for over a week. I have bought an unnecessary data pack that I can't use. I am paying for a service that is not being delivered - I consider that a breach of contract. I have had no assistance in this matter from Telkom. How do I get a resolution?