Useless service

Absolutely shocking- pushed from Pillar to post to change my debit order banking details after 10 repetitive emails,eventually send through my bank confirmation letter and the bank details for the change of debit order over 2 weeks ago. You still try debit my old account and now you have handed me over to the collections department. It is actually laughable at the incompetence of a company. I will not follow up as I have proof of all the emails, but what I will do is deduct the fee for the bounced debit order, the service is shocking. I wish there was a no star rating!