Worst company

Something gave me a call and asked me if i would like to get a cellphone on contract.At first i did not want to because i dont know anything about them.I asked about their phones and she explained.I told her i dont care what phone it is as long as it has a BIG onboard memory because i have to send emails and pdf files everyday.She told me the samsung they have has a 258GB onboard memory.I said its fine.They sent me a Blackview phone with a 16GB memory.I cant download certain apps that i need for my work.I have talked to several people and they said someone will get back to me.Its been 4 months now and no reply.Every month payment is deducted with no problem.If im not assisted i will cancel the debit order.