you are brave to take your modded/wheeled car to firestone for a wheel balance but in between now and next week, i would start typing a letter, documenting everything that has happened up until this point. followup monday/tuesday on the claim number. if no response escalate to their corporate contact :
http://www.firestonetire.com/customer-care/contact , certify mail, fax or email in letter to bridgestone corporate if needed.
in the meantime, some of your local repair shops might be able to give you an "internet estimate", you upload your pics, give description of the damage and contact info to wait for a quote to be sent back during the week. when i did this on my last vehicle repair, only 1 out of 4 shops that i sent an internet estimate gave me a repair price, the other 2 told me to come it - which defeated my efforts and the third never even responded past the auto mail responder that my submission was sent.
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