Nokia I want my bulk SMS

i've shifted to E71 , N958gb is with my mum , anyways , it's the begining of Ramadan and last night i SMSed some 2500 of my customers Ramadan Greeting , I send the sms at 8 pm came back after night prayers at 11:20 and guess what only a few SMS had gone through , bitterly I tried to cancel the sending , don't want my customer's phone go beep beep in the middle of the nigh but no it won't let me so I had to put the phone on offline mode for the whole night for all the processes to die out . When i checked later in the morning my phone was s sending a measely 6 SMs per min , Nokia did you put a limit on the software , my E61 was much faster covered my bulk sms in a hour but E71 the ultimate in business comm is lame .
Solution I smsed the message to me on E61 , changed the SIM and send it from it but what about sending bulk from E71

SMSed

Farhan