Draw pattern changed without consent.

My draw pattern was changed not so recently and I know a factory reset would fix this BUT, I have applications that are not obtainable as the apk installer that's native to Android was removed and means I wouldn't be able to download them again without external devices which I've not have access to. I'm able to give any proof that I own the account and devices linked to it. I DESPERATLY need my draw pattern to be either;

• Changed - If it were changed to my old draw pattern I would be able to continue use regularly like it was before
• Removed - If it was removed in exchange for changed it would help me the way if it were changed would. 

If either of these aren't possible I'm just going to have to abandon my headset as it took me too long to get all of those things and it would drain me to just lose it all in a whim. 

And again. 

Even under ANY condintions, I am NOT preforming a factory reset. 

Thank you.