Terrible internet quality and customer service disgusting!

Fiber is working poor! And customer service even worse! Highly advising never use them! Now trying to cancel my fiber! But as I said the worst customer care. And when after long waiting on the phone and spending too much airtime they told me but you are premium customer, why you want cancel, and they put me on hold again. Trying to contact them online via app, also terrible experience. They also owed me refund for my second line at another property. I have never received refund. Now trying to cancel both properties. Really horrible! Companies like that should not be allowed to operate!