WORST SERVICE EVER!

WHY ARE YOU DEBITING MY ACCOUNT????? I made an arrangement with RAIN to pay R970.00 of the R1400 due as i have an issue with the account. I was told someone from Finance will phone me to make a payment arrangement for the rest. NO ONE HAS PHONED ME YOU KEEP CHARGING MY ACCOUNT FOR RANDOM AMOUNTS, AND WITH EACH DECLINE I PAY A FEE???????????????????????????????????????????? YOU CANNOT SWITCH OFF MY INTERNET CAN SOMEONE PHONE ME PLEASE?????????????