Cannot resolve query on my MTN account!!! Charge R78.26 for an SMS!!!!!

I sent and SMS to my dad last month. My MTN Bill says : I send a message to number 72 and the cost is R78.26!!! I logged an error with MTN on 1 June 2020 at 09h45. I received an automated response soon after. On 9 June 2020 I received a mail indicating that I most likely was attended to, but if not I must respond with "I still need help".. I did this and on 15 June 2020 I still had no answer, so I mailed again. I received a mail on 15 June 2020 giving me a reference number from the accounts department. I thought we were getting somewhere. On 21 June 2020 I send a mail asking what is happening now. On 21 June 202 I received a response mail saying: Good day Japie,

Thank you for emailing Customer care.

We sincerely apologize for the delayed response and for any inconvenience incurred.

Please note the below response from Billing and Network: T&Cs stipulate whether an incorrect msisdn is entered, the message will be charged at whatever rate is on the rating table. Charges are applicable.

We trust that you find the above in order.

Kind Regards, Pinky Ngeleka MTN SA

Reference Number: ***