WORST SERIVCE EVER!!!!!!!!

I wish I could post no star because they don't even deserve one star. Paid for my router 3 weeks ago and the sim didn't want to connect, they then swopped out my sim and still not working. Managers phoned me and don't even know what is going on on my account. I have to follow-up with them everyday and they just not bothered to get back to me. I am still sitting with no connectivity. I requested that they refund my account I was simply told that the refund will take 12 days so either I wat for them to sort it out or wait 12 days for my money. This is ridiculous!!!