VODACOM AGAIN

Hello Vodacom Again Every morning since 7th April I receive the following message: Vodacom: A reminder that your Data bundle expires 00:00. Want to buy a new bundle? Dial *135# or visit https://vodapay.go.link/eJ0wb Not sure why I received this message? I thought I had an open ended contract? I am not sure what I have to do as I am still abroad overseas for the next few weeks? The last time you refunded me when I forced to pay an irregular payment request from you! I am concerned that if I do nothing that I will be cut off again?!!! Also the attached payment link does not seem to work?! Why are you sending me these messages each morning? I am so sad that I have to revert to the Hello Peter Platform Hoping to hear from you soon ROB NEWBERRY *** (WhatsApp Only).