Service Non Existent

On 27/02/2018 I did a transaction of R4399 on my credit card with Vacation Hub International (VHI) but cancelled the agreement the following day on 28/02/2018. On the same day I completed a credit card dispute form and it was emailed to the credit card division. Ever since I have tried to claim back the funds from VHI but have been unsuccessful. VHI was informed by FNB of the dispute but have done nothing to do the chargeback. Never received any feedback about the process or any progress made with it and the dispute have only delayed the refund process. VHI now requested me to obtain a letter from FNB as they need confirmation in writing that the chargeback was not done and thus no payment made into my bank account, as well as confirmation that the dispute will be closed off as VHI can only then process the refund and transfer the funds into my bank account. Contacted FNB on 5/06/2018 to determine what the situation was with the dispute process, spoke to Thuso Mapsila who could not explain to me what the outcome was but he referred me to Prudence Mathebula who dealt with the dispute. I send her an email but I was told that queries cannot be resolved with direct personal email and was also told to re-submit the dispute. This is absolutely ridiculous as FNB have done nothing in three months to assist me in resolving this matter. I want this matter resolved and are not willing to waste another three months on the same issue. I urgently request a letter or communication in writing to confirm that no chargeback was done and that no funds were received into my bank account and that the dispute will not be processes any further, as VHI can only then do the refund. I have requested such from Prudence but to no avail. This transaction forms part of a transaction of R10 000 that was also done with Absa on 27/02/2018 and this refund can also not be finalized. I am a premier client but it shows that it clearly means nothing to FNB .