Horrible experience, wish I could transfer my loan...

Horrible experience, wish I could transfer my loan. Customer service constantly gives you the run around. Will confirm they have the needed documents, make you wait three weeks, and then on a weekend or holiday when they aren't available, will e-mail you a notice going "We need this document you already sent us and confirmed we had" and then the whole process starts over again. At one point miscalculated my loan payment amount, drops an e-mail four months later in the middle of Thanksgiving dinner telling me they made a mistake and need to triple it with less than a month to try and rearrange finances to deal with the extra several hundred dollars a month. They say to leave a voicemail in everything they send out but their system doesn't give you that option. It once took four and a half months to get them to accept my spouse's federal loan information despite using the system they kept telling us to use, only after two months to say "oh, that system hasn't worked in months" and then to keep losing the e-mailed and the uploaded versions of the required information. This kind of service is what makes people go postal on an office. They clearly do not care at all about their customers, even the ones who pay up front, on time, and extra. It really does feel like they're trying to force people into default on their loans because of how difficult they make it to give them the required information without them repeatedly losing it.