Unsatisfactory service

I am horribly disappointed at the service Iv been receiving from old mutual. Iv been going to their lenasia branch to put in a notice on my investment account and the first time I went 3 weeks ago the consultant transferred an incorrect amount into my bank account, I then went back the following week which was last week Monday to have it sorted out and get the right amount transferred to my account and I was then advised of 5-7 days. Today's marks day 7 and I still do not have the funds in my account meaning I have to go back to the branch for the 3rd time to get my money from old mutual which is ridiculous and a huge inconvenience caused by their incompetence.