Coast are a con. Beware!!
CFS - Coast Finance Solutions are a company that is setup in Luxembourg and they do not have FCA authorisation unlike WFS - Welcome Finance Solutions who (for their faults!) at least did have FCA approvals. Due to this they have got Target Servicing Ltd to 'manage' the account on their behalf. Target DO have FCA permissions...to a certain extent. All letters that you receive will be from Coast BUT 'administered' by Target. When you call the telephone number you are talking to Target, not coast. Target say that they have a SLA - Service Level Agreement in which they are authorised to perform certain functions without consulting Coast ie agree payment arrangements.
Personally, I have sent a complaint to the FCA and FoS - Financial Ombudsman Service. The FCA won't update you on the complaint which is why you also need to copy it to the FoS. However, you can only send it to the FoS after you have got a final written response from Coast/Target (OR your complaint is over 8 weeks old) about your complaint.
I would suggest asking/complaining to Coast/Target that payment arrangements are being made by Coast (because they are on Coast headed paper) BUT Coast cannot make such agreements as your loan/mortgage is a "regulated product".
The way in which Coast/Target are trying to get around this issue of FCA regulation is by allowing Coast to "utilise (Target) our FCA approvals...". I am certain that is now allowed as it'll open a Pandora's box for anyone else to do the same!!
Therefore, write to Coast/Target about the above and more if you have it....then get a final written responce out of them ....then complain to the FCA AND FoS.
Phew...
Anyhow...I would be pleased to receive an update from yourself and anyone else who is having issues with Coast/Target.
Cheers.