*********** staff harassing innocent people

i have been receiving sms's from Vericred since 21 Feb 2018 for my RCS Account that i have settled in October 2017. I called them to advise the account has been settled with VVM Attorneys and my credit bureau has been updated. They asked me to send the proof of payment and settlement letter to ********** which i did on 22 Feb 2018. Then on 28 March 2018 i received an sms again saying i need to settle the account. i called again and i was advised that they have received the documents and i shouldn't worry about those sms's cz their system send random sms's to customers even when the account is up to date. Today the 05 April 2018 i received a demand letter from Vericred. Can you please update your records and stop harassing me.