Bad service

Good afternoon,my Name is Kefuwe and I'm with Absa innovation group. I have a problem with which I need assistance. I was behind with my installment payments. I sent them an email asking them to debit on September 25th with which they didn't respond directly but with a Auto- reply email which in it I saw that debit order arrangements are done 5 working days before the actual debit day. I called them and spoke to Khulekani I dont remember what were the dates but it was before the 25th or the 25th I do t remember, I was told that I was behind with 2 installments and they arrangement was made for the debit order to go through on the 3rd of October. Now in the 26th of September a debit order went through for one month and on the 3rd a debit order for two months went through and i was told to take my car for a service on the 7th which is today. Now, after the 2nd debit order went through i called because I wanted clarity on what was happening and what must I do next,the kept on asking me to hold the line until my call got cut. Now this morning I was preparing to take my car for service and then I got an SMS from innovations that the debit order didn't go through, I waited for 8 o'clock to call them as they dont make it their priority call their clients. I spoke to a guy who promised to listen to the Voicenotes and get back to me,that was at 08h00 am,and he said if the problem was on their side they will let me take the car for a service (instructions from his supervisor apparently). Now after 4 hours I called them back,spoke to Khulekani again and he told me something different from what I was told about the outstanding number of installments. Now I have to wait for another 7 days for them to debit and call them on the 15th to find out if I can take the car for a service, now my question to Khulekani was what do I do when the kilometers from the car the 1500 mercy they gave me,he couldnt answer me. I am pregnant and on my last term,I have an appointment with my gynecologist tomorrow in town which is a bit of a distance, I am using the car to travel to work, I am working night shift(18h00-06h00) and I cant rest enough because I've been busy with these people on the fone and they are not of help for me. I cant use public transport to travel because it's a risk for my pregnancy. Please help me resolve this,because I'm afraid that should the kilometers exceed the 136 500km they won't service the car.i asked them if I could pay cash will they refund me and their answer was no.

Thank you in advance