Negative report on credit profile

I called your customer service on December 12th about a premature debit from my account. Unfortunately, the explanation I received was not satisfactory. I explained to the representative that I understand salaries are disbursed early in December, which I accept. I even shared a screenshot, which I have attached, to clarify that the funds debited were intended for my petrol expenses. I was left feeling stranded when she informed me that she could not assist me, and I had no choice but to reverse the debit order in order to get to work.

However, my difficulties did not end there. Upon reviewing my credit report, I noticed that it indicates a missed payment for December, which was not my fault, as well as a missed payment for January. My account is set up for debit orders, as shown in the screenshot. I am making a concerted effort to improve my credit score during these challenging times, but it continues to decline. I have consistently paid my account on time every month without any issues.

I kindly ask for your help in resolving this matter, as I cannot afford to have negative reports on my credit profile.