Put phone down

I was just on a call that lasted 10 mins and 8 seconds, holding because they decided to waste your time and airtime with computer taking you to several levels before putting you through to a human and then the lady I spoke to put me on hold (not sure for what reason) and the phone was put down. I wanted to know what date I closed my personal account and she has my new number as I gave it but not even a curtesy call back! Now I still don't know when the account was closed and am R20 short in airtime now!