Unreliable Bank.

Good day, my name is Idah I made purchase to Trends stores in Pretoria west on 3rd April 2019 using Capitec bank card, transactions went through immediately and cleared. To my surprise this morning I woke up with bank notifications from Trends with same transactions and amounts. I called the customer care and complaint department they don't understand how that happened however they will investigate and revert back within 14business day. Where does it leaves me?... I am frustrated by their 99 debit orders that goes to my account everymonth that i am paying charges for dispute but this is worse......