Buyer Beware: overpromising and underdelivering on packages

Purchased a package of an unlimited LTE line with 150gb @ up to 50mb/s and throttled speed of up to 4mb/s only to receive throttled speeds of less than 1mb/s (closer to 700kb/s) which made it almost impossible to function or access the internet. Their support staff don't take calls. And when whatsapped they are bound by a service matrix that has been of no help at all to me. Query remains unresolved to date.