Charging me twice for the same breakfast!

I frequently go to this restaurant because I quite enjoy their food. However, on the 19 January my husband and i went for breakfast and it cost us over R200. I paid with my card and the amount was taken off immediately. Two days later i got another sms with the exact amount debited from my account from Pearl Spoon. I phoned my bank to ensure that it did indeed go off twice. They confirmed that it did. I then phoned Pearl Spoon, as advised from my bank. I have been phoning them every week at least once or twice and they keep telling me the same thing. They say they are still verifying with their bank whether they did get payment from me twice. Until today, not one of the owners contacted me and this is really upsetting me. If they do not want to give the money back then they should just say so instead I must waste my time, effort and airtime phoning them! I am now fed up and vow never to go back there ever again!