I have been a supermedia customer for about seven ...

I have been a supermedia customer for about seven years. I can see one thing - a glaring drop in the quality of service to price ratio. It is not only about the Internet / TV but also about the attitude towards the customer. Due to the change of operator, I asked to release and mark the cable so that the fitter from the new operator had no problems with connecting. The Supermedia employee did not come for an hour after the agreed time, so I called the hotline. There I got information that the fitter was already there, it is not known if he marked the cable. To my question, how are we to identify the cable, then, the hotline said that the fitter from the new operator should check all the cables with a potentiometer or other device. I will only add that I live in a block of about 50 apartments. It is very weak.