BAD CONNECTIVITY FOR 3 WEEKS - UNRESOLVE CANCELLING MY CONTRACT

I am writing to express my deep frustration and disappointment regarding the Wi-Fi when you call the Call Centre average waiting is one hour and when you eventually get hold of them, THEY KEEP SAYING RESTART THE ROUTER THAT ALL. I will cancel my subscription with them this month this is ridiculous it been 3 weeks without internet. I won't recommend to anyone