From Nov.2004 to Nov. 2005, I was overcharged for gas to heat an apartment that I rented. I was forced to pay the said amount in the spring, and after I threatened to sue them,they sent me an unexplained refund of $600., and in addition,refunded the property owner over $1000. for the gas that had been used in my unit during the year [protected]. I was not able to speak to anyone in charge; my only contact was with extremely rude call center employees.At one point, I actually threw the phone out of frustration. I moved out of the unit in November 2005 and they have sent me several notification letters saying they owed me a refund of $56.38. I have yet to receive anything, and I feel that they owe me far more than that. I called in October 2005 to say I was moving out and still they have not sent me one penny! Other individuals have told me they are impossibly rude and difficult to deal with. Endbridge would be the first to cut off your heat if you didn't pay your bill on time.