Parents were refused visa to attend my graduation in a weeks time. Totally unbelievable ! The form was properly filled online and they were asked not to pay for the visa, they confirmed this at the office and the staff insisted they need not make any payment due to their passport type.3 weeks later they were denied the visa because they did not pay the visa fee???!!! They were clearly asked not to pay despite them insisting on it.Two years ago when dad invested thousands of pounds for me to come study there was no visa issue, now he cannot come spend a week to celebrate with me, over £95 visa application fee?I called today to see if any payment or rectification can be made over the matter as their passports are still within the UK and I was told It can’t. Please, I will need more clarification as to why my parents visas were declined, when their documents were complete and they followed every instruction given.Many Thanks,Grace