MTN Night Data Promotion is a ****

Please assist? i have been trying to contact MTN with on luck. Owner (Butch) of MTN store advise me to call the MTN Oubutsman *** - the calls discontinues after 5 min of waiting. <br> <br> I have a data contract signed with MTN 2G (anytime) R119.00 pm. At the moment my account is standing at R830.59 with a closing balance of R238.00. After investigating today 29 May, I was told MTN had a promotion with Night data, I was not made aware of this data. I always check my data balance and always have data carried over. I was told today that I should had used *141*1# for balance enquiry. I feel that this is misleading and not what I signed up for, therefor not liable. Please assist.