No network Data coverage

This is the second time I am experienced bad service s from Telkom. Previously I purchased a Telkom prepaid card and actived the R50 500 GIG data bundle that works between 12 - 7pm which never worked because apparently in the area I lived in Nongoma had no Telkom data coverage (why does Telkom advertise and sell these products nowing there's no coverage/pls advise your customers), Telkom is the oldest and largest leading telecommunications services in the country, so why is there no infrastructure?. Yesterday 30th of January 2018 I received an SMS to recharge with R40 and get double deal, so I recharged with R40 and received 3GB of data that will expire in the next 7 days, I was very excited. To my dismay when I tried using it, I then received reply my bundles expired !!! Again this time I was misled due to bad network data coverage. I am certainly a very frustrated client and request Telkom to reimburse me for the inconvenience...it's Not the money but it's the principal. My iPhone clearly shows MTN network coverage and all other date works fast and efficient, but why when I purchase any telkom data bundle s there's always lame excuses we are sorry your area does have Telkom data coverage and does not support while on roaming services. It's either your data works or not, not excuses like does or does not work on other roaming networks, if that was the case then simply advise your customers theres no data coverage at all and kindly port over to other networks, stop falsely advertising your products.