Data ripoff

I purchased data 10 GB on the 7 August 2021 for R469 today 19 August 2021 my data is depleted. How is this possible. I tried to contact Telkom to enquire about my data, you cannot even get through to their contact centre 100 or 180. 10GB normally last me for 2 months not 11 days. My mother also complained yesterday that her data was depleted after 7 days on 7 August I donated 2 GB and on 12 August she purchase 500MB for R69. My Telkom contact number is tel:*** and tel:***. I believe you are taking advantage of us. We purchase data because we are working from home.