My guess is the 457 is with Prudential and you started an IRA with them because they were convenient and the state trusted them. Prudential managed one of my 457 accounts, and they were awful. I had no choice, Prudential was the employer's choice.
In your shoes, I would immediately move the IRA to Fidelity or Vanguard. Fidelity will provide a bit more service, but you need to choose investments there wisely. Don't let them tell you they can "manage" your money. Just open the account and transfer the assets. With Vanguard, you are on your own. Pick one and have them do the account transfer. Don't even talk to the jack ass at Prudential. Read a bit from the suggested sources here and take a deep breath. No need to do anything now except to move the IRA.
With regard to the 457 plan, you should review the funds and the fund fees. The objective is to pick the lowest cost, best performing funds they offer. If they offer lower cost index funds, those are likely your best choices. You are probably paying an annual or quarterly fee for the 457 plan. That's usually a flat amount, so the more you have in the account, the less that fee matters. Hold your nose and keep contributing. When you leave your employer, you can take the money with you.
You may want to look at your choice of Roth vs traditional IRA. If you qualify for the traditional IRA, it may make more sense to do that. If you think your income will be lower in retirement, it often is better to defer the taxes until you take the money out in retirement.
If the Prudential guy was that rude, I would call his supervisor at Prudential and complain. An e-mail to the benefits person in your agency wouldn't hurt either. Take as much business as you can away from that company and pay the lowest fees on the money you have to leave with them. That's the best revenge.