rebursment for LTE-A being down in my area.

I have lost 150gb last month because of LTE-A being off in my area and now another 200gb this month, and still sitting without wifi, after they just cancelled my contract *** 301 662. So I paid R800 for April and R800 for May, just to use 50gigs of data out of my 400gigs. I feel this is very unfair. You should atleast reinburse me the R1600. I've told the customers service lady last week when I phoned in about the LTE-A and she agreed, but still nothing has happend.