Slow connection.
Low tech router: keep disconnecting.
Absolutaly usless customer service: don't answer the phones, don't answer email questions, ignore reported faults, arogant.
Additional chargé for nothing: few pounds every months, no explantion given.
I'm in the proces of getting some legal advise as it looks too much like a froud to me.
Keep yourself away from POP telecom, save your time and nerves.