Cell Phone Service Issue Letter

Dear {cell phone company},

I am writing in regard to an issue with my cell phone bill, in addition to ongoing service disruptions.

My account number is {number}. On my bill dated {date}, there is an erroneous charge of {amount}. In fact, {service charge should be waived/I have unlimited data/I cancelled warranty service last month/I am no longer traveling internationally}.

Additionally, I have been experiencing {dropped calls/poor reception/etc.} and need insight into why this is occurring. I have notice that {circumstance}.

Please contact me via my cell number at your earliest convenience so we can sort out these matters.

Sincerely,

{Sender}