RCS HORRIBLE SERVICE

I recently(01/05/2019) made a payment of R19700 to RCS because i wanted to settle and close the account,I unfortunately messed up the account number when making the payment. I then checked the following week and then RCS customer services said it would be allocated which did not happen ,I sent proof of payment but still no assistance given from RCS

I have sent numerous emails and called the contact center but still no assistance, They keep sending me from pillar to post and no one can resolve the query, I asked my bank to recall the money but they couldn't because RCS refused for this to be done. Im not a problem client and my instalments were always paid on time every month. I am currently heavily pregnant with hypertension this is really causing me problems and i was trying to eliminate the problems