MTN are *********

My parents purchased a pay-as-you-go ****le then put a MTN simcard in it. Since then, MTN not only blacklisted them for not paying an account which they do not have, but also data has vanished overnight repeatedly! When approached, my parents are rudely told that they do not know what they are doing, albeit they've used this ****le for over a year with no previous hassles. MTN cannot provide any reports of data usage and baltantly ignore our expense of constantly purchasing more data. Disgusting, useless service with no attempt from them to compensate the loss!