Pathetic service at rcs worse company to ever deal with

I made payment on the 29th dec of over R19000 and till date I get numerous calls daily asking me for payment and my account has been suspended.. I have been sending proof of payment to various departments in rcs, that agents was giving Me from collections to rcs payments and till date the payment has not been allocated on the account and I am being charged daily interest from the 29th dec which is so pathetic.. I am so frustrated and irate as I have spend so much airtime trying to get this matter sorted out still nothing is being done.. when you ask for a manger to speak to you put on hold to speak to a team leader after holding on the line over 30 mins still no one comes on the line and you told the team leaders are working from home yet they cannot answer a transferred call??? You ask for a manger to complain and you told there is no manger what **** is this?? I feel like retracting my R19000 from my bank as this payment is sitting idle somewhere and I'm being charged Interest on this account, I spoke to 2 teamleaders zuffa and last one today who was so rude leeanne and unhelpful when I requested to speak to a manager she kept insisting the manager will say the same thing , eventually I spoke to the manager Mohamed who gave me his email address and stated he will be in touch with me regarding feedback and will have his admin team look into this matter and make sure the payment is allocated, and stated he will be sending my pop directly to the finance manager to make sure it is done today and sorted out.. I am quite ****ed off right now as you get various agents giving you various departments to email your pop and it's not done a month later and you get a call today stating the account has been open and no longer suspended and the payment is showing but refuses to remove the Interest fees, yet when I call this afternoon the 22nd Jan I was told no payment is showing!!!