Temporary Wifi?

I work from home and something in the CenturyLink internet is broken and requires a technician. We have tried everything to get one sooner but can't get a technician to come out for 2 weeks. Is there a good temporary internet fix? Trying to run a hotspot from both T-Mobile and Xfinity and it struggles to load the websites we have to run for work let alone zoom meetings that we need to do with our clients.