You took the money from people and used them for something else ... Dumb action , but at least you could communicate with investors like this : "guys i made a mistake ... bla bla bla... everyone makes mistakes... bla bla bla .... i will be able to pay this month 2000$ , next month 2000$ , etc"
I have never been in this kind of situation ( to take money from someone for a purpose and to use it for other and then lie all the time) , but i had loans which i couldn't pay in time but i have always communicated with the guy who i owned money and even though he was a little mad he completely understood.
Bottom line : it is better to come and communicate and settle a deal so the investor wont feel scammed,betrayed or whatever.
**** happens all the time ... everyone makes mistakes (intentionally or unintentionally) ... but we should understand eachother. NOT communicating is BAD in any case.
I am not an investor , and i am not judging ... i am just giving a peice of advice .