C-fibre continuously resetting to get streaming to work

I have over the past 2 months had to call every second week to have my line rests and my Netflix will not even stream on low res. Also I have had a billing issue that has now resulted in my free one big fibre SIM card being cancled when the billing issue isn't even linked to this simcard. I'm sick of calling your call centre fix my line once and for all. The reason I went with fibre was to stream not be throttled on low res. 360p even my ADSL was better then this.