Continued charges on already canceled contract

On 30 March 2017 I posted a complaint about RMCS for continuing to charge fees to my Edgars account after confirming my contract with them cancelled on 28 November 2016. I immediately received feedback from RMCS and they reversed the charges and the related interest. However, every few months, these charges commence again. Currently my account has been getting charged from February 2018 till my latest statement. RMCS is not reachable on the 086 number they distribute and that is given out by Edgars. Meanwhile Edgars claims to be unable to block these charges coming through to my account. This is very bad business etiquette and is very upsetting.