Money pit Discovery invest

I have a couple of investments with Discovery invest , which are doing so badly I am tempted to cancel and move over to other companies , to salvage whats left ********** ********** 069 ********** 076118 One is a lump sum of which has not increased from 2015 it is just effectively getting reduced monthly , invested at the same time with another company and the other company is doing very well . I honestly do not see a point with investing with discovery .

then the other two are an endowment policy performing just as horribly .

what are the implications of cancelling this ridiculous investments.