Follow up on an enquiry at 22:30!!!!!

My husband has recently paid his Game account in full but yet we keep getting notifications for interest/service fees on the account that needs to be paid. So my husband made an enquiry yesterday morning. Last night 15/11/2018 at 22:30 a consultant phoned my husband and he wanted to know if this is a convenient time for him to talk as he just wants to follow up on the enquiry made by my husband regarding his Game account.

This is unacceptable! Phoning clients at 22:30 to do a follow up! If you could not phone during office hours then phone the next day! RCS is supposed to comply with the treating customers fairly legislation as they are a financial services provider, how are you considering your clients needs and treating them fairly by phoning at 22:30!