I started experiencing intermittent to very slow i.e. <1.0Mb ADSL download speeds on Friday followed by an essential outage at one point; I attempted a fix myself this morning using the online video guide for the test socket but to no avail so I called CS around 10am which was answered extremely quickly. D****n walked me through the change channels procedure very patiently and had me up and running very fast. I wasn't aware of the procedure beforehand but in a mail to close the job he also gave me a link to it on the PN website and if the problem occurs again I am confident that I could run through and check the procedure myself to either eliminate the step or fix the issue. Thanks again D****n for excellent CS.