Capitec spams with POP

After asking for a proof of payment to be emailed to myself for a once of payment from my account via the app, I have now gotten over 18 identical emails (one every 15min) from Capitec. I've tried calling the contact centre, but the agent claims I must : take it up with Google, gmail (and I'm not with gmail) and then my internet service provider. Its not me, these emails are GENERATED by Capitec. My inbox is filling up rapidly ! Stop !! Your whatsapp line is no help either.