Hey guys,
One of my customers has some severe cabling issues with some ports only connecting at 10mbps, others dropping out etc. Having a look at their wiring it is a real mess and I don't want to get too involved in case I break something. My suspicion is either cat3 has been used erroneously, there are breaks or its running too close in parallel to power.

Can anyone recommend a company to come and have a look at them, run the Fluke tester over etc. to see what's going on? 

Thanks