Ridiculous Service

I have recently settled my personal loan with RCS on the 28th of May 2024. They sent me my recent loan statement which indicates and reflects the settlement amount on the statement however the amount to settle the loan was more than the settlement amount done. There is a credit refund due to my of R612.79 which also reflects on their recent statement provided to me. I then request the refund credit to be paid back to me, spent 25 odd mins speak to a consultant on the process to follow to get the refund paid back to me and today I get an emails from a consultant called Chumani from RCS refunds departments asking me for proof of payment for the loan settlement when you can clearly see the settlement amount paid to them on the 28th of May and its now the 14th of June. RCS is this how you treat clients or get rich by holding back clients refund on over payment of is your staff not competent enough to use logic and ask for ridiculous inform? Please can my refund be processes today and back in my cheque account for which you have the information as I sent it to you to process the refund else I will approach the banking ombudsman on this ridiculous matter.