Extremely Poor Service and No Resolution from Vodacom

I am very disappointed with the level of service I’ve received from Vodacom. I have been paying monthly for an internet backup system that has only worked twice since I got it. Despite reporting the issue, nothing has been done — no follow-up, no feedback, and no effort to resolve the problem. I’ve essentially been paying for a service that doesn’t work, and I would like Vodacom to refund me for the entire year that I’ve been billed while the backup has been non-functional. I also expect the issue to be properly fixed and tested before any further payments are deducted. The lack of response and accountability is unacceptable for a company of Vodacom’s size. I hope this matter is taken seriously and resolved urgently.