Pathetic customer service

If there is one thing I regret doing in my life is taking a building loan with Lendcor who's new name is Kanga Finance. I took a building loan of R30000.00 in March 2021 and the capital balance was R35980.00. June 2022, Kanga Finance sent me a sms with a balance of R28068.07. Today (12 December 2022) when I wanted to settle the account the settlement amount is R42046.87. I have been trying to contact their offices the phone just goes straight to voicemail and I requested for a detailed statement from their website to date I still have not received the statement. This is the worst and pathetic service I have ever received and I have decided to report this company to CREDIT OMBUD. Instead of the principal debt to decrease it keeps on increasing, there is definitely inconsistency and I am fed up with this organisation.