Requested closure of account - still charging fees and account not closed

I’ve settled my account on 26 May 2020 and requested my account to be closed. Almost 5 months later I’m still being charged fees, and now have been handed over to the collections department for outstanding fees that is charged after I’ve settled my account. I’ve been phoning and emailing for 5 months with no result. Everytime someone will phone me back or look into my account. Edgars / now RCS. Taking money from us without honoring my request. No wonder RCS had to take them over but customer service still lacks greatly!!!