MTN now increase percentage of xtra airtime borrow to 15%

When the economy is going tough, MTN decides to increase their charge on MTN xtratime offer.

They didn't recognize that people are already complaining and managing the 10% deduction, on Extra time and xtra bytes  they choose an increase to 15%.

Though i decide to use MTN XtraTime and borrow, N50 from them, their new 15%, will eat up everything,so what remains of the xtratime and they still want me to pay?

And people's still they manage that 10% before but is 15% will you borrow?