Traumatizing of bereaved elderly parent

My brother died in a motor vehicle accident many years back but still this business keep on pestering his 81 year old mother for money. The estate was finalized many years back and the outstanding fees on the car was settled by the short term insurance. Letter attached. Dear Sir/Madam Please note that ABSA BANK is offering a 20% settlement discount on the shortfall outstanding on the Absa Vehicle Finance Account for Estate Late M......H..... L.....s. If you are interested, Sthembiso Nkosi at *** or email ***. Kind regards, Vezi De Deer INC

How many years will they continue traumatizing the elderly????