Poor network Kaalfontein midrand

fisrt they are selling their service at the low prices because they know that their service its *** service actual they are running ****, we are buying or paying for service that we can not use, you pay R199 for 40gb 20 night nd 20 day, you cannt use all of that data in the month because of the poor network or signal coverage, how they benifit out of that, your data expire on the 31th of each an every month, thats how they make profit. icasa must do some thing about this ********. why your data has to expire if you paid for it?