Can I sue cricket wireless for a mistake on my account? If yes, how?

I made a payment at a cricket dealer and got a receipt. The company claims the payment is not in the system. They asked for proof by fax, so I faxed it (have a fax receipt and spoke with a rep to confirm). The company has cancel my service several times because of this payment (I have missed important calls and paid airtime). I have talked to several reps, still the issue not resolved. The reps will not connect me to management. Can I sue cricket? And for how much?