Very poor service

Before lockdown I did adress the matter here about my tracker, I have provided the details Of the lady bought my car so that they can arrange with her to take off the tracker and install it to my new car, last week when I was there, they told me the person who was busy with my transaction is no longer working there, what I want from you is please cancel the debit order from my account I have the proof of the emails that I was busy with this matter and if you can't help me I'm taking the matter to ombudsman