Been with PlusNet for one week and its been nothin...

Been with PlusNet for one week and its been nothing but trouble. Slowest download speed I've ever had and the internet almost impossible to use for 10 hours a day. Every excuse has been made except an admission that the router might be faulty. Now, apparently, its errors on my line despite 3 of their staff telling me its a problem with the wi-fi connection. I don't believe a word of it. I'll be leaving PlusNet as soon as I can.