Business ProfileforGreen Mountain Energy

I started service with this company in January and in order to start I had to pay a deposit totaling $250. I made two payments of $125, one on January 5th and the other on January 8th. On my account it appeared that the deposit was refunded on the 9th of January but I have yet to receive the refund. because on my account it shows that it was refunded, when I got my bill for the first month of service I was once again charged the $250 deposit. I have reached out to the company on multiple occasions, nobody can tell me why it was refunded in the first place when I never asked for one. I've been told a check was mailed to me but I've also been told it should've been sent to my bank account. I was supposed to receive a final resolution around the 9th of March and when I reached out a week ago I was told that another check was sent out on the 16th and that I should receive it in 5-10 days but it is now the 31st of March and I still haven't received anything. It has been well over 2 months waiting for my refund and have yet to receive anything. i even updated my billing address before the last check was supposedly sent out so I really don't understand what the issue has been. I'm very tired of calling and only being told "it has been sent out" again and again.