Mtn it's a ****

I app**** for wifi router in December then receive it in January and it came without simcard I called them many times but no help even went to mtn store,at the store they said the only help I cn get it's Simswap,in February I went as they couldn't help sending my simcard,now they say m owing them Jan.feb,Mar and April,they say I must pay 2000 to open my line, of whch I paid and stil my line is off they said 24hours now they say 72hours