Daylight *******. Pathetic after sales support

Pathetic after sales support. I have a 500mb line that, for months now gets throttled to 10mb every evening presumably because of insufficient capacity that has been purchased from the fibre infrastructure provider. No one who can help me. Instead call centre agents hide behind excuses and tell me to send emails that no one responds to. Very happy to take my money in spite of the service not being provided. DO NOT USE!