Paypal deducting ********ly even though I am trying to cancel subscription

I have a subscription PAYPAL MONAPPCLAB that I have been trying to cancel on PayPal for many months. This subscription transaction gets deducted from my Bank account every month. There is no available option on my PayPal profile to cancel this subscription, although PayPal itself says on its website, that i can cancel my subscription by unsubscribing on my profile. Not only can i not get hold of them, there is no transaction history of these subscription/deductions. I want to cancel my subscription, and I want a refund for the transaction that went off my bank account on the 1st of September. I should request refunds for all the other months as well as I have been struggling to get hold or help from them. This is extremely poor customer service.