Perhaps you shouldn't be purchasing a 12 month advanced contract, instead of going month to month which would solve many of your issues.
Or perhaps you don't need all the shiny-newness of every new services?
Maybe your business is different than ours, (or any business I've worked at in the past), but from my experience, we pick a tool - MailChimp for example. Does it have every feature of every other mail service? No. Does it do 90% of what we need? Yes. What about the other 10%? Well, does some feature that MailChimp doesn't have provide a significant improvement to our business? If so, then you need to have it. Do you build it yourself? Find another supplier? Or, more likely, it doesn't have a HUGE impact, and you can figure out how to make things work.
I'd be curious to understand what is so unique about how your business is using these services that you are experiencing this problem.
Or, are you looking for a problem to solve and this is how you posed the question?