Frustrating service

Last week I contacted Absa Personal Loans myself to see if I could increase my instalment so that I could could decrease my term snd finish paying off the loan quicker. I opted to lower the term by with an increased instalment. Upon reassessing my situation, I figured that I won't be able to commence with the change immediately and should rather delay it. When contacting Absa Personal Loans, two consultants advised me that if I decrease my instalment back to what it was my credit score will be affected and I will not be able to get financial assistance from ABSA ever again. I fail to understand these statements because it shouldn't be a problem going back to my original loan term more especially if I requested to increase my instalment on my own. Why will it affect my credit score and why does it seem as if my original loan agreement has been altered? The lady who called me to do the change advised that I could always decrease or increase my instalment payments as I wish and no one advised me that my score would be affected. Can somebody please decrease my instalment in line with original term and ensure that my score is not affected. The following consultants advised me that my score would be affected, Sindi Hlasa and Megtrisha. Please, I don't wish to be frustrated.