I may just be lucky here, as I don't find life any more difficult than it always has been.
Certainly, some online booking services are a pain, but this in my experience is caused by my not being familiar with them.
I decided that as online booking, buying etc. has come to stay that I would just have to practise using it a bit more.
Booking train tickets online in Denmark IS a nightmare, so I simply on days when I wasn't going anywhere and had time, chose a destination and went through all the steps except for paying - simply closing down the site when I got to that stage.
It has worked, it was mainly my inexperience that made it hard. There is no alternative to the railway company, so it was worth the effort.
Buying things online, if possible I use a homepage that I find easy to use, as there is usually a choice of firms selling much the same goods at much the same prices. In the instances where I do need one particular firm, then the same process as with the railway company applies.
Here we have a small voluntary group of people who help you free of charge with computer or phone problems if you turn up at the local library between 2 and 4 pm on Mondays. This can be very useful - do you not have something similar?
It is, I find, less frustrating to try and find out how all these things work, than constantly becoming annoyed at the very prospect of dealing with something online or over the phone.
As for the foreign help-lines - it should be possible to find a couple of films on Netflix to watch so you can accustom yourself to Indian English or whatever other brand of English theise helplines employees speak.