Telkom Woes

I purchased data from the Rosebank Mall outlet using my debit card and received an SMS 5 mins later stating that there was a delay with the top and was issued a reference number. I called the call centre a day later and logged a case regarding the issue and I have since been logging one case after the other with no resolve. I made the purchase on 27 Feb 2018 and even the store manager could not help me. I have been requested to submit the proof of purchase as well as proof that the money was subtracted from my bank account and have travelled several times to the branch where I made the purchase as requested by the call centre consultants. The current case I have logged has been in progress since 10 April 2018 and today marks a full month still in progress. I no longer know what to do except take legal action against Telkom as they have taken my money but have not been able to give me any refund or provide issue the product that my money was debited for and also considering all the resources that I have used over the past few months trying to resolve the issue. This is my last call for help regarding the issue.