Unauthorized deductions

Sanlam developing markets have been deducting money from my mom's SASSA account without her permission. When she went to Sanlam offices they told her it's not them however the statement from SASSA indicates that it's from Sanlam developing markets with FSP number: 11231. It is also surprising that our neighbor is also experiencing the same thing and their dedications started at the same time. Investigate this matter and refund them their money.