Easy the sms way - no proof

I received sms's out of the blue in January 2018 for my daughter. I phoned the number provided. They can't tell me anything. My daughter has to contact them. I told them she is out of the country and can't phone them. We went to Telkom in Grove and they told as the reason for the amount of R 871.35 is data . We paid the amount. Then the sms's started again. On 23rd of April 2018 my husband told Sibulele that our daughter is overseas and she did not activated the account and he must cancel it again because it was cancelled in 2014 already. My husband sent them the proof of payment. Then in August 2018 the sms's started again and this time it is R1300 something. We did cancel twice. Today a lady from Nudebt phoned me on my phone to talk to my daughter. I said that my daughter is overseas. She can't tell me what it is about but I guessed it is the Telkom account again. She wants proof that my daughter cancelled the contract. That was 5 years ago and my daughter is 2 years out of the country. No she can't talk to me and put the phone down. My husband sent Gareth from Nudebt the proof of payment and asked when the sms's are going to stop? He told my husband to ignore the sms because Telkom has not updated the account. We still get sms's.