disputed transactions but no dispute forms

I received my Nedbank credit card statement for period 9 August - 8 September. Upon making a payment, I realized there were transactions made on my credit card account that were not authorized by me. These payments were for 2 separate Netflix subscriptions, with the description "Keizersgracht". To my knowledge this refers to a city in Amsterdam and upon further research I realised that this happens to be the city where Europe's Netflix's head quarters are situated, so this transaction was obviously processed outside of SA and not by me. I called in to dispute this and the person I spoke to at your call centre said he would send me a dispute form to fill in and send back immediately. It has now been 5 hours since the call took place and I have not received anything. I had to wait 25 minutes to get through to an agent, using my own airtime. I am not going to call again and waste more airtime just to get one of your agents to send me a claim form like I was promised the first time round. Please make disputes a priority and please ensure your clients get your full support when dealing with disputes. Please send me my forms. ***