UberOne *****!!

I signed up for UberOne months ago. I cancelled the subscription but I have been debited non stop on the 1st of every month. I've had 4 or 5 debits go off. Last month I was refunded the R50 but now it's gone off again this month on the 1st of February. UberOne keeps saying they can't locate my payment. It isn't even active on my app so I am not benefiting at all from paying for this service. These debits need to stop! I am now fed up! It's ridiculous and it's *****!