Refund for duplicate payment on Capitec pay

Recently made a purchase online using Capitec pay on my banking app and the payment went off my bank account twice. I requested the bank to forward me the proof of payments indicating that payments were indeed made to Zando, following which I forwarded them to Zando. Zando confirmed that the funds were not received into their account and that I should contact Capitec pay. I went on to send Peach payments which is part of Capitec pay a mail to which they have not responded. I want the matter investigated and the funds returned to my account.