Standard Bank Homeloan error a nightmare to try and fix- and making money off it. I give up

Stay away from Standard Bank Homeloans! Standard Bank Homeloans charged a 1.5% risk rate on the bond while the house was being built. The house was completed end of May and Standard Bank gave me a stamped letter of Completion 24 May. They did not remove the 1.5% risk rate in June, nor in July, nor in August.

After about 4 weeks of calling and mailing and explaining they adjusted the rate in September but now I cant seem to get my refund for the overcharging of the 3 months out.

I am considering switching my homeloan to FNB- where I bank.

What a nightmare.