Poor credit card queries resolution. Inefficient credit card after care services

I'm so fed up with the resolution of these issues taking weeks to deal with where much inconvenience, wasted time & energy is experienced by myself. When a problem is taking too long or I seem to be misunderstood by junior staff, I have requested on numerous occasions for a senior manager to intervene to no avail.

These are 2 related & consecutive issues that recently arose. 1. New credit card delivery took a month October 2023) to resolve. This was a tedious experience where I had to deal with my inability to return calls to Woolworths (Ww) as the line just cuts; Ww sending my new card without notifying me so that it went back & forth between Ww and the courier; dealing with frontline employees who cannot communicate telephonically - they mumble, don't understand, they don't make sense etc; Eventually after exhausting attempts mentioned above my card arrived.

2. Received my new credit card and started using it with no issues from 1 November 2023 at different stores. I went to pay my Ww's credit card FULL balance on the 8th November ( which was due 11th) but just could not pay it off. My payment would not accepted. I went to a few stores where managers tried to assist but to no avail. I notified Ww financial services via email on the 8th of my issue. I, by the way, also received a confusing SMS stating that the courier was trying to get hold of me regarding new Ww credit card and that I needed to accept delivery or it would be returned ( as mentioned I was already in possession of my new card).

Without going into the boring detail, I'm still trying to resolve this. I was told via email that if I was able to pay by the close of 17th November I would not need to pay interest on the amount outstanding. Needless to say my card closed off and I was charged about R1000 interest. I asked for this to be reversed due to the once off problem of not being able to pay off the full amount but this has been ignored. I asked what an additional amount of about R2400 debited to my credit card was and have still not had a response regarding that amount. I've asked for a senior manager to call me but keep getting responses from customer services and the like reiterating the credit card T&C's which I'm well aware of (& I'm a chartered accountant so am well versed in these). It's really is unacceptable that I'm forced to deal with the general responses of junior staff when I require a competent explanation. I'm a loyal customer but am not treated as such. I pay off my FULL credit card balance monthly & it's a substantial amount; I sometimes pay it before the due date too. I've asked for my entire history of payment over 15 years to be analysed so Woolworths can verify this but obviously it has not been. The interest remains unreversed, the explanation of the 2.4k is unanswered and contact from a senior manager who would understand the issue in it's entirety and hopefully use their discretion on the matter is still outstanding. It's a shocking attitude and stance taken against a loyal customer of many years