Poor Internet Speed and Service

We had a 10Mbps ADSL line that was working perfectly. We reported a fault on the voice portion as this was very noisy, and they sent out a technician. After he had a look around he went down to the exchange to make some changes, and when he was done our line speed had dropped to 5.7Mbps with an SNR of 4.0 and a higher attenuation. He then called to ask if the problem was resolved, and we informed him that things were much worse. It was then revealed that he moved our connection to the wrong strip at the exchange, which resulted in it thinking that we were further away from it than before. We asked him to put everything back the way that it was, which he said he would do, but never did.<br> <br> The next morning he advised that he had corrected the problem, but our line readings had not improved.<br> <br> We have since tried calling and escalating the issue, and eventually managed to arrange that the technician would come out again this morning at 10:00. At 09:45 we received an SMS saying that the issue had been resolved, which it hadn't.<br> <br> We have since tried contacting the call center, technical department, and technician, all to no avail.