wont allow me to upgrade

good day I am writing this on behalf of my mother who is so angry with Vodacom she is slowly canceling all of her contract and she has gone from I think 6 or 7 contracts down to like 4 left and those will be canceled as well for all these years she has been able to upgrade due her being under debt review but had done upgrades before she went under review and after she has been a loyal customer who has never missed any payments her Vodacom bill is always payed she is extremely disappointed with how Vodacom has been treating the situation I have been told by my mother if Vodacom doesn't want her business she will just go else where to a company who wants her business