LG GB220 unlock advice please
 

PAYG on T-Mobile
IMEI No:355736033226937

I have tried two different unlock companies and the first one said they could not generate a code for it and the second said that it was either:

- linked to unexpired airtime contract (not true)
- linked to contract in default (not true)
- reported lost or stolen (not true)
- handset is the property of airtime provider (bought from tesco)
- handset is permanently tied by network provide

Would it be worth me trying to find a local shop to unlock it with a cable, or should Iget my daughter another handset.

Many thanks