problem not being resolved

Since last Thursday I cannot purchase a data bundle. I use top up service & have never had a problem before. I phoned in & tried suggestions made which did not work. I phoned in again this morning a lovely lady helped me by purchasing the bundle on your side. Received an sms to say it's active but received an email shortly after which said it could not be activated. Phoned in again this afternoon & I could not be helped.