Hello, you could always try resetting your modem for 30secs, by pulling the power cord out and putting it back in after 30secs. Sometimes, leaving your modem on for a long time will cause alot of issues with your internet..
That's good, have you also tried change your DNS Settings? to a different server? such a 22.214.171.124 and secondary 126.96.36.199. If it doesn't help, then they will fix the issue sooner or later, just have patience.