Takealot refuses answer a complaint

I bought a book later returned it.i bought different book i was given te exact same book at a different price. I enquired about this and did not get a RESPONSE. I eventually used the book because im unisa student had to write my exam soon.I took my complaint to goods and services ombud,they told me must give takealot 15 business days to respond.15 days is 4months+.from last year october 2015 till now 19 february 2015.No response from takealot from me being overcharged for a book.The ombud is useless cant it do something force takealot to respond