MTN ***** airtime and data

Hi , I loaded R100 airtime last night and bought 3 gig data on Friday 5 November. This usually lasts me a reasonable amount of time and works best as i have fibre at home. Today to my surprise I check my balance account and I have R0 airtime and i have night time data that i have never purchased. This happened before and MTN resolved the issue. Kindly fix this mess you created by *****ing my airtime and giving me night data i did not ask for.