Reversed payments

On 28th Nov i was charged 3 times for an Uber cab ride instead of once. I called FNB to dispute the two extra charges and I filled in a form and emailed it. Today I received an sms saying that the funds were reversed and available in my account. I checked and it was not available so I called them and the customer service agent sounded more confused than anything. Placed me on hold for a long time and I eventually dropped the call. All I would like to know is, when will the reverse payments reflect in my account.