Renewal charge on upgrades before 14 months

Careful when upgrading your contract with MTN, they now charge you an early cancellation fee if you renew your contract before the 24 months is up. I got charged an additional R1000 on my bill for this. This was never done before with their renewals. This is after I received harassing phone calls from MTN to renew. Do not fall for these calls and wait the 24 months out.