Pathetic customer service

I have never in my life as a consumer received such pathetic service from any service provider. My debit order was unpaid, i tried to contact their customer services to get payment details in order to make an eft payment, I waited on the queue with no answer. I searched for correspondence from them on my Email and I made a payment. I could not enter the banking details manually, I had to select them from public recipients, which I did. I realized after making the payment that I had paid into to Old mutual account ********** instead of ********** 47, I called their call centre again with no answer once more. I sent the proof of payment to ********** on the 29.03.2018 and did a follow up on the 04.04.2018 and there is no reply to date. I just want my payment to be allocated.