Unresolved matter with Capitec Bank

Capitec had promised to resolve my issue with the buying of electricity through its phone banking within 5 but my issue hasn't bn resolved till today after 8 days. O have has no contact from the bank since then. They have just disappeared with no update or any communication. This how this bank treats it core customers cause noe they have more customers.

I am not happy with the way the bank has been handling this matter. They are taking me for granted as their unvalued customer. I will have to seek advice on what further steps to take from now