extremely rude lady restaurant manager

we went for supper last night 14 June 2015, all our food were very salty and when we told the waiter the restaurant manger came, she was very unfriendly did not greet in a polite manner and when i told her all our food was so extremely salty up to a point where the saltiness burned our throats all she said was that she will go and inform the chef no im sorry for this no apology whatsoever, she walked away with some of the food and our waiter came and collect the other food, at this point my friends left cause they said their appetites were spoiled. the waiter came back with new plates and i told him my friends left they need to make it a take-away cause my gosh nobody would wanna eat soon after having such salty food while their throats were still burning. So the manager returned saying since have a partial mvg voucher i cant get take-aways, even though she saw my friends left, so i had to return to the mvg desk to have this sorted, while there she came and said my food is ready and packed,they never packed everything and she said all the stuff i mentioned wasnt on the table but yet it showed on bill, she kept arguing and eventually told me to just take my food and go. PATHETIC