Kent County Council has received "40 or 50 complaints" about RedHotAnt, Kent County Council Trading Standards said today.
Rob Davies, a spokesman for Trading Standards, said the complaints had been received over the last couple of months.
He also confirmed that officers have visited the ISP at its Hythe offices on at least one occasion.
According to Davies, RedHotAnt told Trading Standards that the problems encountered by consumers were due to a massive demand for the service. The ISP said it intended to double capacity to meet the demand.
Paul Saville of RedHotAnt said that Trading Standards officers had visited the company and were "happy with what they saw".
Davies said Trading Standards will continue to monitor the situation.
Earlier today the RedHotAnt said it had been hit by a weather-related technical hitch. ®