Thieving Telkom LTE system

We have an Lte contract. At the end of Dec 2022 the data was almost used up so I bought R150 of data at the walk in centre at Blue Route. I asked if this data which kick in once the Dec 2022 data was used up. This was confirmed. I kept an eye on the data usage and at the end of Dec 2022 the system then started using Jan 2023 data. I have contacted the call centre who were not able to explain to me why the additional data was not used. It would appear that this additional data of R 150 will expire. It would appear that I am using Feb. 2023 data already and am about to loose the R150 data which I bought in late Dec 2022. I am of the opinion that Telkom is *****ing from me. I want to be reimbursed for that R 150. Bad service and the call center and walk in center are both ***********. the walk in center does not have access to all the systems and cant even give you an accurate balance of your remaining balance on your lte system. Poor service staffed by *********** people