Doubled the price of my data contract out of the blue

Hi MTN,

I have 2x data contracts with MTN for a long time, out of the blue I am charged more than double for one of them for October 2021. I used to pay R130.45 for 5GB data (upgraded previously to 10GB) , and now it's suddenly R278.26.

Please can this be looked into?

Thanks Danie