Shocking service or lack thereof from @TelkomMobile.

Shocking service or lack thereof from ********** A call logged in Nov '18 for airtime purchased & not loaded. This call was closed unresolved - reason out of SLA. A 2nd call made on 28 Dec '18 to the supervisor (Charmaine) who promised that she escalated the 1st call for resolution & assured me that it would be resolved by the following weekend. She could not log the 2nd call without the supporting documents, but promised that I e-mail it directly to her, and she would open the case. To date I am yet to receive a response. I then called in again on the 8 Jan'19 to log the 2nd case and incorporate the outstanding 1st case. Call was with Sipho, which assured me the matter would be resolved. 45 minutes on the line to ensure that he includes all the required details, including supporting bank statements. 16 Jan '19 a follow up call made to enquire on progress made & spoke with a lady who I could not quite hear what her name was, & she promised me that the matter was being attended to. Call disconnected whilst holding. 22 Jan '19 another follow up call made & Lulama confirmed that the case was closed - unresolved because there was no supporting documents When I requested that I be transferred to a manager, all managers were unavailable attending to other escalations. The call once again disconnected. Now what more does one need to do for a resolution on this matter? Does the time, energy and effort justify the R300 that @TelkomMobile refuses to refund?