Billing and service is useless

Terrible experience thus far. Never had a good connection. Halfway through a month we would have no service at all for a few days. We have a 60Mb/s line and even upgraded to a higher package. After that they insisted we upgrade our router. We still have the same issues with a little extra. They have double billed us this month and even though we have already sent them the proof of payment the people at the call centre still insists that the payment does not reflect even when we sent them the proof of payment. Save yourself the blood pressure. This company is ***