Unhappy and bothersome experience

I have signed up with metrofibre around end of January and I have never received an invoice or statement. I have been trying to get in contact with the accounts department from 8am this morning and I have even spoken to their sales reps,given my cell number and emailed the sales rep that I have dealt with but have been ignored and I have also told them that I require the documentation urgently. After giving my number I was told I will be called and nothing has happened 30mins have gone by. Really disappointed.