Suggest Treatment For Recurring Cavities

i have six cavities and 1 root canal, i had a terrible tooth ache in december , and i went to the dentist to get it sorted but im afraid of needles, because last time they gave me anesthetic and they did not let it numb , so when they pulled my tooth i felt it and was in pain. they transferred me to kings dental , but that was a failure because the only done a check up and they told me if i get it done i have to be awake. they told me that they will do the root canal on may the 6th. im in really bad pain now , and i cannot wait that long , the pain is getting worse and worse. i already had an abscessed and i think im getting another 1 .