Supervisor ignoring me I have an issue with my Masters' dissertation. I was supposed to complete it for May, however when I submitted my proposal on February 24 but I had no reply about confirmation until I emailed my tutor multiple times and she only responded on March 20. So, because she took nearly a month to approve it, I have missed the chance to hand it in in May and graduate in July. 

I have emailed my tutor with questions regarding the dissertation on April 19 and heard nothing back, I emailed her asking for an answer again on the 19th of May and still nothing. It is really hard because she is also the module organiser so I can’t email anyone else about this.

S,o not only did I miss may deadline and now need to hand it in in August, but I don’t know what’s going on exactly and also don’t get replies to my emails regarding the dissertation. 

What would you suggest I do because clearly emails are out of the question and I am getting really frustrated. Because it’s a distance learning course, I can’t go to university to see her.
You should definitely follow up on unanswered emails before a whole month passes. Perhaps try calling her office directly to see if you can reach her. And if not, then contact the departmental admins to find out how you can. If your questions are related to substantive material and not the logistics of your module, then I'd suggest asking someone else in department who does work in your area.