[but i can not play a single online game]

Hey guys
I just subscribed to Cablenet 2 weeks ago in Larnaca
I heard of the hype so i decided to try it myself but so far i am not impressed

i pretty have similar problems with the ones i also saw in Cablenet Review article
I have the triple pack tv phone 6mbs
i have fast speed according to all my speed tests

but i can not play a single online game

I called 130 couple times and yesterday I emailed them telling them in a very polite manner either help me or i go back to Cyta

now last night for the first time i could play Warcraft 3 frozen throne (dota) but i could not play any PS3 game or Heroes of Newerth on PC

i rather have Cyta 2mbs and play decently than have cablenet 6mbs and not play at all

to be more specific
Warcraft 3= cyta  85ms Vs cablenet 300ms
Heroes of Newerth = cyta 60ms Vs cablenet 999ms
CallofDuty (PS3)= cyta 3/5 bars Vs cablenet 1/5bars

p.s.I am not a techie like most of you guys so please understand me if someone has answer it before and i couldnt follow his direction

p.s. i used a USB broadband antena for my desktop on top floor (25euros instead of 99 linkys) and i have my ps3 wired to the modem