got sprint but they cant transfer my number from alltel

[ashamans]

Well after talking with a sales person at a sprint store a month ago, then talking with sprint on the phone two weeks ago, and with them when I ordered the phone they assured me I can transfer my number to sprint from alltel but when I activated my epic they can't transfer the number because they say the networks full

My alltel number is 785 259 xxxx

What should I do? If I knew this I would have not got sprint but now I have the epic I can't go back

Thanks