Rain not assisting with urgency

We recieved our router in the 29th of March it is now the 7th if April we have complained that our router worked for 2 minutes and then stopped completely. Please cN you find a fast solution as we need to use the WiFi for business and school issues and we find it incredibly unfair that we have paid for a service that we now cannot even use do something to assist us or refund us one of the two