Telkom data 40gb data being used in 10days is unbelievable

I had telkom internet since 2018. Of which I had a deal at R350 for 40gd day time usage and 40gb night time surfer.

In beginning 2020 I was called by a consultant to sign another contract as my old one was expiring. I then took the R300 deal of 40gb day time and 40gb night time surfer.

Since I signed my new contract my 40gb day time data has been running out on a monthly basis. I never had this issue with my data since 2018 therefore I stayed with the same data deal. Somewhere I'm being **********. Every month between 10th-30th day of the month I run out of data.

So in actual fact it seems like I'm consuming 40gb in 10days which is impossible and we are just two activated uses.

I will now complain the consumers board because to cancel my contract I need to pay R800 even if I give 30day notice.