Rain cancellations

Towards the end of October I cancelled my rain 5g Wi-Fi using the app. To date no cancellation has been effected. All I get is a message saying our consultant will call you shortly. Is there anyway that I can cancel besides the app. This is so frustrating cause I now have fibre Wi-Fi and can’t go on paying for their services that I don’t need anymore. Does anyone know about a number that I can call to cancel as there are no contact numbers on their site.