Coomeet Comewel Unauthorized Charges

I created a Coomeet/Comewell account last week and then cancelled it, yet today four separate in‑app charges were taken from my bank account without my knowledge or consent. All four payments were taken at 00:18 today and together they total £16.74, showing as “Comewel” on my bank side. I did not approve or authorise these four transactions. As soon as I noticed the payments, I cancelled my card because my bank is currently closed and I could not immediately reach them. I have also tried to contact Coomeet/Comewell support but so far I have not been able to get through to anyone. I am writing from the UK and I request that the four unauthorised charges totalling £16.74 be fully refunded, that my account is permanently closed, and that I receive clear written confirmation that no further charges will be taken from my card or any associated payment method.