can't delete emails

Can't delete emails...am at max/2gb....one cox Customer service rep hung up on me...second call said that  Cox is aware of the "can not delete"  problem and is working issue (at least he knew there was a problem) ..no ETA nor did they know when the problem started...WTF...need my wife to migrate to gmail like I have so I can save couple hundred per  $/month for crappy service  and move to verizon for intenet and utube for TV.