Downgrade from premier to Gold and change the date of when i get charged for my bank charges

its been two weeks have been gone to alberton branch and golden walk branch to get assistance to downgrade from Premier to Gold and change due to salary drop and the date of when i get charged for my bank charges since i dont get paid on the 15th but 25th of every month so please assist with these request since am not going to your branches and be given the call centre number to call and wait holding please azssist on account ********** 5930 Downgrade from Premier to Gold and change the date of when i get charged for my bank charges to 25TH can contacted on ********** 438