Not Professional Advice: The Frigidaire Affinity dryer "E64 Call service" error is telling you there is a problem with the heater. If this happens, you must take the dryer apart and check the heater circuit.
With a screwdriver, a pair of pliers (a multimeter if you have one) and a new heater element, you can fix this yourself and save a couple hundred bucks. Make sure to disconnect the dryer before performing any service or repairs!
Check out the step by step process for dealing with the E64 error at The Random Fix.
Learn how to keep your clothes dryer working efficiently. Follow these tips for removing lint regularly and cleaning interior stains to keep your dryer in tip-top shape shared by Bhg.com.