Vodacom "stole" my vodabucks

On Friday,17 December 2021 I accessed Vodacom app in order to exchange some of my vodabucks for two Pick n Pay vouchers of R20 each (60 vodabucks per voucher). However, I experienced problems with my banking App during purchases. In that process I managed to purchase only two Pick n Pay vouchers but Vodacom instead deducted 240 vodabucks (four vouchers) immediately after the transactions I checked the balance of my vodabucks and realised I was over charged thought on the Vodacom app it shows that the transactions for other vodabucks was cancelled, but, unfortunately not refunded. Before I wrote to this platform I tried to deal with the matter privately but Vodacom's call centre is manned by Tobi,l cannot access consultants. In conclusion I need Vodacom to refund me the 120 vodabucks that we never used.