Discovery Bank

As a member of Discovery vitality I booked two rooms but was charged 3 times. I complained to discovery bank and a month later nothing was done. When I called again they tell me must speak to vitality. After sending vitality proof of triple charges and reference numbers still nothing am told will escalate the issue, but get sent a email saying I won’t be refunded because I had two rooms which I utilised for full stay, but they don’t say we charged you 3 times for two rooms