Appalling service

Apart from having to wait a month for delivery of router which happened only after I complained to them I am now unable to get hold of them to activate the SIM card. I have made over 15 calls each lasting between 6 and 10 minutes before the phone call cuts off. I have emailed the customer support. I have left messages on Facebook messenger and still have not had a response since last week Thursday. Absolutely appalling service. I would not recommend this company to anyone no matter how good the deal sounds.