Poor service

On the 7th of January 2026 I received a router, apparently when I connected that router it says connected without Internet. I called them but they keep on making promises that they can't keep, I even went to the shop but they couldn't help they told me to solve it online ever since I made a contract through online. I tried to cancel the contract but they refused and told me that I must first finish my contract. I suggested that they bring another one that is working but they kept me on hold .