Kulula took payment by mistake from credit card

Kulula took a payment in error from my credit card when booking my online seat reservations on a current flight booking. I phoned , and was given a email address for Beauty Muranda to mail my credit card statement so they can see the amount being deducted. This amount would then be refunded to me, I have sent numerous mails to her with no response. I eventually got in contact with Kulula again regarding my query, but unfortunately they are unable to put me through to someone to resolve my query, the best I can do is send a email to their customer relations. And they will be in contact. I sent this mail, and copied Beauty in this mail to them, and still have not received any type of communication from them. Service in general has gone down in our society, but I've received specially bad service from Kulula in the past 6 months.