Contract Declined for NO Reason whatsoever!

My contract application was declined whist I have never missed a single payment ever and I have close to a perfect credit score. There is no proper complaint link on their website as they are very sure that they cannot handle the amount of incompetence shown to clients by their employees. Every person on any customer care phone number that you can possibly call, refers you to someone else and that continues indefinitely. Then as soon as someone sounds remotely interested in what you are saying, 'the system's offline or it's Sunday and he or she cannot assist you'. Put down the KFC and do your job, it CANNOT be lunch time every minute of every shift you work! Do you not need the extra clients or what is going on? After they reviewed my status, they indicated that it was a mistake in fact and that they would rectify it, this was on 20 October 2019...