Not * worth * in a word!

Not * worth * in a word!
Information about repayment note requested with regard to changing fixed-rate period. Turns out I was not fully informed by helpdesk and therefore fine has more than doubled. Submit a complaint about this that I have been duped as a result.
A month and several. mails later, without a substantive response, I suddenly receive a new repayment note that has tripled. Again indicated that the 1st complaint has not been processed. After 2 months I get a message that they apologize for their service and the long wait, but that they reject everything and the repayment fine has tripled in the past 2 months due to the failure to respond. Anyone can make a mistake, but solve it but you will not be heard or taken seriouslyl contact is difficult, rigid, they are not to blame, do nothing wrong. Always depends on the customer, etc.
If only I had looked here before.
What frustrations with this organization in recent months. It is very unfortunate that the NIBC is participating here because this also radiates on them.