Keep hanging up on calls 3 times in a row over 17min waiting

I have been getting sms that i am under debt review and i know i am not.

i called the number provided and Chwayita from african debt advisors and she said i have created a profile.. whitch i never did and was very rude and said i must call the number sent to me to cancel what i have done now 3 times and i dont have any more airtime to be exact it was over 325 rand used to call and do a cancelation for what ever was put on my name i have never called them to apply for anything yesterday was the first time hearing from them..