Fixed rate from karwa? I didnt hear that before .. you should contact the cosumer protection department on these numbers:

Toll-free: 800500
Hot line: 44945500 / 44945550
Ministry Tel: 44945555
SMS: 92665
Please send your complaint or suggestion + the word (consumer)
FAX: 44932004
E-mail: [email protected]
Website: www.mbt.gov.qa