********** activity by Connect Financial Services

I am very disappointed at the service I have received from Rochester. End of October 2020, I went to the Woodmead branch to settle my account and was told I would receive my settlement letter that week. I never received that letter instead, the next month they continue taking their instalment. and I have been receiving monthly texts saying I have missed an instalment. it has got so bad I can't get further debt from my bank as Rochester and Connect Financial Services appear to be owed. I get 10 calls from their call centre a day...I tried explaining to them and nothing ever changed and I am sick and tired of the service revived from Rochester...they have sent me from pillar to post and nobody has solved the situation wven though they see I can to the shop and paid a whole 21k...can anybody assist from this ********** activity of trying to get more money out of me