You then have to find people willing to do all that gruntwork without getting paid, while the rest of the population is effectively confined to house detention since everything except those services is closed down due to nobody being able to do a transaction. Sure, it'd be do-able, but only at gunpoint. If you just "freeze bank accounts", people will set up alternate ways of doing financial transactions, so it's not enforceable.
The real problem is that just providing those skeleton services wouldn't usually require a huge number of people, because of increases in productivity, but most of the things people actually do are value-adding that's not that bare-bones minimum needed to survive. If there were no paychecks or bills or ways to provide a service and be paid for your effort, everyone would drop to putting in the literal minimum of effort, and overall the economy would collapse down to a rump of just surviving. For a start, all creative endeavors that require a lot of people such as TV shows would stop production unless the government came in and commandeered them and commanded them to keep making the shows. I'd normally say they'd switch to a taxation based model to pay for the shows to be made, but in this case that wouldn't be viable because they couldn't even pay the people who work for the government any more. So, they'd have to basically conscript people to work in TV production and you'd get standard rations while you did so, not remunerated based on how many hours you actually did your job. You could still get Youtube, however since there won't be an advertisements or other economic support for youtube channels, even that would collapse back to levels of quality circa 2008.
And then you'd be in the situation of the government decided which shows are needed and which shows are not, the same way they're deciding everyone only gets raw apples and bags of flour. because making and providing apple pies is a waste of the scant resources.