Our Telkom data keeps disappearing

We have an LTE internet contract with Telkom For 50GB + 20GB anytime and 50GB night surfer data. We hardly finished the data before lockdown since we were both working away from home but on the 20th of April our data depleted as much as we were surprised we thought we buy an extra 20GB + 20GB On 23rd April 2020 which was R249 and was to expire on 23rd May2020, we were shocked to notice our internet was not working after 4 days. When we checked our account we realized the 20GB + 20GB had depleted as well. We made contact with Telkom via Twitter DM and we were told first that we cannot recharge our account because it’s a contract and it’s “postpaid”. We explained to the gentleman that we made a purchase and it was approved I have all records to prove the transaction. We were requested to forward the records and so we did and have not heard from the gentleman since. Today 26/05/2020 our monthly data has depleted including night data and we never did any work from home or downloads. A week ago we checked our data and we were left with about 30GB and today we have 0GB data left on our account. Please We would like Telkom to either give us daily record of data usage or record to show how it happened that our data would vanish like that and also the data we purchased on the 23rd of April be returned to our account or our R249 be refunded. Please.