Can't get a settlement on loan due to my details changing

I contacted the ABSA Call Centre to get a settlement amount on a loan which they were not able to give me as my details had changed from when last I used them (a long time). Simply stated, they can not proceed to assist me in helping me to pay up my loan due to this. I am not taking out a loan, I am not asking more more credit from them, I want to pay it up. I got my address wrong, I have moved 4 times in the last 3 years, I am sure they could help me out by asking me to double check my address instead of cutting me off... I have changed jobs, funny enough, my work number might change along with that too... So, should I just stop paying in totality, would this get me the help I want?