Death of souse - trying to claim from RCS Credit, impossible after 4 months of trying

I have had the displeasure of dealing with the worst Credit facility called RCS for months now. My wife passed away on the 24th of May 2020 and I approached RCS within 2 weeks of her passing. I have called customer services numerous times, I have e-mailed numerous times to no avail, they still send e-mails to my wife's account for outstanding balances. The one reply I received was an application form for my wife to apply for loss of income, it is disrespectful and disgusting. I responded that it was not a loss of income but that she passed away. It has been 4 months and I still don't get any help from RCS even though the account had insurance on it. I sent RCS proof of payment to claim for the funeral on their funeral plan but they just ignore my requests.