The "Out of Order" state of the Home-Connect app and their Customer service

We were instructed to cancel one (of our 3) contracts via the app as you cannot do this via call centre. We have tried and tried, but upon selecting the contract we want to cancel, there are no options to select. We have tried different login details. We can clearly see all other info regarding all 3 the contracts via the app, but we cannot cancel them.

I decided to phone the call centre today as we would like to cancel the contract by 30 November. The call centre's Support team tried to help, being very friendly, however this is a case for Customer support. I phoned twice, waiting for an operator, but it seems that the cellphone app is not the only service that is out of order...the phone was cut off twice and every time I phone again I will be at the back of the waiting line.

We have no way to cancel the contract and we do not expect a payment to go off in December due to it being impossible for us to cancel it. We expect that somebody will help us in this matter when Customer Service returns to a working condition and we expect that we will not be billed due to negligence on Home-connect's side. Thank you in advance.