yea definately give them a call. I was in the same boat, noticed my youtube vids were struggling to load plus my downloads were extremely slow..... baffled as to why it was happening because a month or so back i did a speed test and was getting 100+Mb/s download lol............. Ran a speed test again that night and my download was down to like >2mb/s with 20+ ping, similiar to yours.
Try using the Telstra live 24/7 Chat.. Used this a couple of times and they're quite good, really fast compared to calling them up.
https://www.telstra.com.au/contact-us/faults-technical-support Hopefully they'll reset the connection on their end and it sort itself out. Good luck.
Try using the Telstra live 24/7 Chat.. Used this a couple of times and they're quite good, really fast compared to calling them up.
https://www.telstra.com.au/contact-us/faults-technical-support Hopefully they'll reset the connection on their end and it sort itself out. Good luck.