Problems not getting resolved and now no service!

On the 17th of December 2015 I logged a fault where my internet speed was extremely slow and my router was barely syncing. A technician came and replaced some very old wires to my house. It made no difference and I still had unusable internet. Countless calls and chats to the \technical department"had no effect as they just simply said that they don't know what to do further and will assign a technician. <br> <br> On the 28/12/2015 I upgraded to 20mb adsl hoping that could affect or make up for the slow speed and terrible sync rates. No difference.. <br> <br> On monday 11/01/2016 the phone line went completely dead. I again contacted \""technical support\"" and they say there was already a technician assigned to the case and that they don't know anything further.<br> Tuesday 12/01/2015 - no technician"