Delays in cancellation and then they cancel everything

I have been an old mutual client for a couple of years - but when it comes to communication and making changes to things they are seriously lacking. It took me two months to cancel a benefit and now they have gone and cancelled the policy in its entirety. Just because they said i need to give them a cancellation period and I said no and now they just cancelled everything - well if thats the case ok - goodbye then - I will find myself a new company .