My Freedompop hotspot, Freedom Spot ***S *G**G - battery is defective. It gets heated a...

My Freedompop hotspot, Freedom Spot ***S *G**G - battery is defective. It gets heated and can not hold charge.*My account log in is *****@***.com*I have a Freedom Spot ***S *G**G which was upgraded on Dec**,****. Lately the battery has heated up and did not hold charge any longer (dead) so I could not use it for a while and in fact my account was deactivated due to idling for a long time.*I'd like to know whether the unit has to be returned for a refund ($**.** LTE device upgraded fee) or for an exchange for a working unit in order to re-activate the account. See itemized transaction below:*Date*Time*Transaction **Description*Paid*Feb **, *******:** AM**********Refund*- $***.***Dec **, *******:** AM**********LTE Device Upgrade Fee*$**.***Jan **, *******:** PM*********Credit Refill*$*.***Dec **, *******:** PM*********Refund*- $*.***Dec **, *******:** PM*********Refund*- $*.***Dec **, *******:** PM*********Credit Refill*$*.***Dec **, *******:** PM*********Credit Refill*$*.***Apr **, ******:** AM********FreedomPop Data Rollover*$*.***Apr **, ******:** PM********FreedomPop Data Rollover*$*.***Jan **, ******:** AM********Credit Refill*$*.***Please advise*Thank you for your attention and assistance