Slow network, unstable line

I think it’s time to wave goodbye to Linteg, I have a contract with them for a 20mbps line with them, everything has been fine since…until this month….I’m lucky if I get 8mbps…I get even 3000ms pings…Judging from the other posts here, Linteg is losing it now…..I’d rather be on LTE at this moment……totally not worth our money…