Please assist

I am so tired of dealing with Absa now, I was told I must settle the outstanding balance of my vehicle before 20 August 2019 because the Credit Shortfall wont settle it. I did a settlement on the 20 Aug 2019. I have been calling and calling since last Friday with no luck for a paid letter which is delaying my process of other things. Today I was told my account is on legal team and I was given a number ***, I called that number so many times and there was no answer. I need peace of mind now, I am struggling with stresses because of Absa.