Cell C unwilling to assist

Cell C reduced my night time data from 30 gig to 10 gig. I hace just been called by Cell C and was informed that they will not fix my problem. I was informed that I have to go from Mossel Bay to Johannesburg at my own cost and when I said that I cant, I was merely told that I will not be helped because of my refusal to assist. I am hereby advising everyone to rather spend the extra money and go to another service provider. I consider this a breech of contract and will no longer be paying my bill.