Terrible service from Corega Customer Care

Due to a shortage of Corega cream i phoned GSK customer care to ask where I could purchase the cream , the agent had such a terrible attitude and is of no help whatsoever and had a nonchalant attitude as in I just have to wait till July when they get stock again and they don't sell to the public. Even the lady that answers the phone at reception have that 'could not care less' attitude and I had to call three times before I got transferred to Customer Care which could'not care less. Problem is I am dependant of that cream as I deal with clients and need the paste to hold my dentures in place ? What now?