Derby task vanished and support team wasn't helpful

At the beginning of this derby I took my first task - excavate 99 ores mining task. I used all my mining tools and had excavated 98 out of 99 ores before I logged out. When I logged in again I realized that the orange bar that usually shows your task status (ex: boat task 1 done out of 6) on the right hand side of the screen is gone. I then went to check on my task log and it shows that I'm still assigned to the task, however my available tasks were 7/7. I couldnt continue completing the task nor can I trash it. It was stuck there. I took a screen shot and contacted support team in-game trying to get help. Unfortunately, help was not received. Instead, I was told twice that it is accidentally trashed by me. I am 100% sure that I did not trashed it. I have not even tapped on the derby booth after I took the task. If that guy would've took his time and actually look at the screen shot I sent him, he could've seen that the task was still assigned and colored instead of grey colored and has a trash bin icon next to it like how trashed tasks appear on derby log. Thinking of letting this matter slide as I can still take all 7 tasks, I took another task from board and my available tasks shows 6/7. But after the maintenance, I logged back in and my available tasks were reduced to 5/7. I contacted support team again but still hasn't got any respond. It's been almost 2 days now and the task is still shown on my task log as assigned with my boat task that I'm currently taking.

im really sorry for the long paragraph, I just really wanted to show you that there's this bug in game as well as letting my frustration out of my chest. I really hope that it'll be fixed. I hate the feeling of worrying if my task will be gone again every time I log in to game. Thank you for taking your time to read this.