No network coverage for 2 years -

I have been unable to have network coverage for the last 2 years and have reported this in July 2015 - since this period i have no use of any of the 3 contracts that i have - no network, no phone calls, no internet connection NOTHING. I pay my account on time and dont see why i have to pay for something i cant use. I have requested signal strengtheners be put up at my house and phoned on numerous occasions to follow up. Every time i am told that the technical department will contact me but to no avail. Last night i had an emergency at my house where there is no signal and was unable to make use of any of the 3 x contract phones. I am a single mother of 2 and take care of my sick mother. I strongly feel that i should be re-imbursed by Vodacom or that Vodacom must action this error immediately. I dont want any of the 3 x vodacom contracts anymore since their after sales service is totally below standard.