Abhorrent Treatment by Edgars / RCS

From approximately April until early September 2020, RCS Edgars collections company had been hounding me to pay the amount payable on my account. This was purely for their "frills" i.e. Edgars club magazine, Edgars Club and the like (I had been too lazy to cancel and therefore I could not argue that the amount was due), however I had not purchased stock in a year. On the 27/8/2020 I paid the FULL amount due with an instruction to CLOSE MY ACCOUNT (after over 30 years) as i never wished to hear from Edgars again due to the manner in which i had been treated (numerous e-mails were sent to Edgars Collections and ***). This morning i have received an account for October (having sent e-mails again when the September account was received). The problem is that there is absolutely no-one you can talk to. You can't call head office, you can't call a store all the numbers on the internet are returned as invalid. When you call RCS on ***there is a message that states we are currently experiencing a high volume of calls and you get cut off. I would ignore the matter but then we go in a vicious circle again and I would then most probably end up on ITC. BUT I CAN ASSURE YOU I WILL NOT BE PAYING MY SEPTEMBER OR OCTOBER AMOUNT FOR THE FRILLS WHICH I NO LONGER UTILISE!!!!!!!!!!!!!!!!! Please can someone assist me.