Changing my Bouquet back to Compact

I have been with DSTV for many years but I must say that I have had not the best of Service as a long standing customer. Last week on the 17th I upgraded my subscription to Premium. I had to pay an initial fee of R109.87 before I could get the upgrade done. The lady who I spoke to then advised me to phone on the 24th to have my subscription downgraded back to Compact. This I did today, but was told unfortunately I am too late and the premium subscription will be debited from my account tomorrow Morning. I am truly unhappy as this is not what I was told. I do not have the funds available to pay the premium amount I only have the funds for the Compact. do not know why the lady spoke to today could not assist me as I requested. I believe as a long standing customer I should be treated better then that.