Unauthorized debit order

I have been trying to cancel a debit order & get my money back from Mycover Plus, Altech Nupay and Capitec for the past 3 months. First Capitec told me they cant reverse the debit order as its a AEDO debit order . Called Nupay to cancel it & was told to contact MyCover plus who never respond to emails , i sent over 15 emails to them. Capitec told me they cant cancel this debit order because i swiped my card to authorize it, i went through my Dec & Jan bank statement i have no Altech or MyCover transaction. Now i want Capitec to explain to me how was the debit order authorized & prove to me that i did authorise it, as my statements(from the bank) show otherwise. I want MY money back and a guarantee that this will never happen again