RCS loan account

RCS loans is useless. I"ve made a payment to RCS on 05/10/2021 only to realise I used the wrong refrence number(a previous account with RCS that is still on my banking app that has been settled long ago) Since 08/10/2021 I have requested RCS to transfer the funds to my loan account with proof of payment and the correct refrence number that the funds needs to be allocated to, I lost count on how many emails I've send, till today, 10/12/2021 nothing has been done. I'm receiving daily phone calls from RCS, evertime I explain my story and everytime, the feedback I get is they will foward my query to the payments department. Every single day the same story, I have to tell my story again and again, nothing is being done. RCS is requesting further payments from me, I refuse to pay anything until my payment is showing on my statement. I'm even getting sms's now that further action will now be taken against me. RCS is useless when it comes to solving a problem, but they can drive you crazy requesting payments.