I booked flights with last minute to vancouver for 27th July. Flight ID [protected]. On 23rd I asked to change flights for 2nd of Aug. as i didn't receive covid certificate on time. I went online in my account under manage my account but same flight was confirmed on 26th july and email received with same flight confirmed then I phoned few times, everytime on phone i was told your request is under progress but nothing done. On 1st i was told your flights were for 27th July and passed, nothing can be done . I was told that we sent confirmation email, when i said that I phoned after the email and I was reassured that my request is still under progress for 2nd of August. But the person on phone was trying to say that you have not emailed, when I said that I phoned instead of email that means nothing is done on phone. I asked to speak to senior person and he refused to give phone to any senior person. I have attatched the phone record. Very frustrating and depressing experience, feels like someone robbed you financially and mentally.