Incorrect data bundles loaded

I would like an explanation on the data bundles that are being loaded in my account.I received an sms on the 12th of December 2020(morning) that stated that my account has been recharged with 30gig,I then received another one that said my promotional data has been loaded,however when I check the balance on *135#(detailed balance) said my balance is 21.91GB,I received the smses in the morning(8:00am) and checked the balance around 9:00am same day.I called the customer service number and did not get any help.I would like to understand the package that I took and I want to know what happened to my 8.09GB of data that I pay for.According to my knowledge I must get 20GB day and10GB promotional data(30GB in total) for day and night,but its not what was loaded in my account.

Can somebody with an explaination please reply since the customer care number has been busy the whole day today and my email is not responded.My number is ***.