Data and SMS's not received for ***

I am on a SIM only contract for number ********** 315. I used to receive 200 min, 500 sms's and 500mb of data for R168 pm. I then asked Mpho Mokone from MTN Standard Bank to upgrade me to a plan with more minutes but with the same amount of sms's and data. Mpho confirmed on email that I was upgraded to 350 minutes, 500 sms's and 500mb of data for R281. This month I only received the minutes, no data or sms's. When i queried this with MTN, i was advised that i am on a minutes only package with no data or sms's. I have emailed a copy of my correspondence with Mpho to MTN, but they are adamant that the contract is correct which it is not. I am now left without data and sms's and had to purchase bundles even though my debit order went off successfully, so I am now paying double for a service which i did not receive. Please rectify this ASAP.