Please help

Hi my name is Mandisi Nxizela a client from capitec Bank. On the 25 February 2020 I've transferred an amount of R1000 to my daughter's grandmother via USSD to this contact number *** instead of *** and the grandmother didn't receive the money and I went to capitec bank in UITENHAGE branch at the market place about the matter which they couldn't help me getting the money back to my account, now I'm pleading for an assistance. My contact number is ***. Thank you.