Slow internet high attenuation high traffic

FIrst of all i need to just say that this problem wasnt always there it only started happening 2 months ago , after DFA or whom ever the the fibre infrastructure contracters are installed fibre few roads away from me with in a week or two after they installed my issues started.<br> <br> high latency up to 600ms and High line attenuation on my router sitting at 415db down and 255db up which if you calculate in terms of distance which is normally 13db to one km then according to my router i am 25 odd km away from my exchange which is *******. Contacted telkom to explain i was exeperiencing slow internet and high latency they told me that there was high usage detected in the evening , which is understandble but please if you allow another contractor to install fibre in a area make sure they dont stuff up anything . <br> <br> Also where the hell is the new exchange and upgrades for those exchanges my router also only picks up that my maxim rate is 8mb ??? <br> <br> Please can telkom assist and resolve this issue i cannot do what i need to online if my latency is over 500 in the evenings.